Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ba56e097d420c63…

MALICIOUS

PDF

89.8 KB Created: 2021-09-02 04:54:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: c8a41a8a437b39f81b4f5786868bf200 SHA-1: af205d901b59807a40fd8f6bfcaa530a36403dae SHA-256: 7ba56e097d420c63909d5aaad01ceac83abf68d562337f197e7e79df2a88af9e
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document exhibits characteristics of a phishing lure, specifically promoting the installation of remote support tools. The presence of multiple links to potentially compromised or disposable hosting sites, coupled with ClamAV detection as 'Pdf.Phishing.Trojan', strongly suggests malicious intent. While no scripts were directly extracted, the document's structure and heuristic firings indicate it's designed to trick users into executing further malicious payloads or granting remote access.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9792

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://artkulinaria.pl/sites/default/files/file/bafatapuguzoxex.pdf In PDF document text
    • https://bellcera.60km.com/upload/files/roleros.pdfIn PDF document text
    • http://foire-fromages-et-vins.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071454c3a49a---nojukexe.pdfIn PDF document text
    • http://xn--4k0b43gkwo4gn.com/upload/editor/file/xazatafaxesokekemizisa.pdfIn PDF document text
    • http://elsekmont.eu/userfiles/file/labuvokezazififola.pdfIn PDF document text
    • http://tochuchoinghi.org/files/wekimuzinipopefelonagum.pdfIn PDF document text
    • http://folientastaturen.pl/_data/file/wufafaravivotuxuzarimuk.pdfIn PDF document text
    • http://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/160e2a14e7cb8d---jodidinelokok.pdfIn PDF document text
    • https://www.corridar.com/wp-content/plugins/super-forms/uploads/php/files/7lrrl2rqat7kad5815los643cr/473626502.pdfIn PDF document text
    • http://esenkardeslerinsaat.com/resimlerfiles/25228795195.pdfIn PDF document text
    • https://law.myvzl.com/wp-content/plugins/super-forms/uploads/php/files/ua6ooqm2fqdcla3o6f9mhr46ea/67204428760.pdfIn PDF document text
    • http://mylodge-naoshima.com/vesamudoroxerafowola.pdfIn PDF document text
    • http://bertoniamministrazione.it/bertoni/public/file/37964847706.pdfIn PDF document text
    • http://misterholidaysanprisco.it/userfiles/files/nemikijumudomotusoxav.pdfIn PDF document text
    • https://www.infratechgroep.nl/wp-content/plugins/super-forms/uploads/php/files/555873db6e559028dd84090a5353cb6e/51273858592.pdfIn PDF document text
    • http://burke-gallonfamilyreunion.com/clients/28163/File/ladosame.pdfIn PDF document text
    • http://driver-jazda.pl/upload/file/82158358833.pdfIn PDF document text
    • https://www.amiunaorchestra.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607055c29336a---gipirifipekopabevugup.pdfIn PDF document text
    • http://www.hgbehringer.de/img/files/files/rupepibeduzatubagufine.pdfIn PDF document text
    • https://psychologgia.pl/Upload/file/6346698387.pdfIn PDF document text
    • http://ingmontagna.com/userfiles/files/laraxokavavatemaxuzafid.pdfIn PDF document text
    • http://staropolski.net/Upload/file/4946209667.pdfIn PDF document text
    • https://aduanaldelvalle.com/userfiles/file/beraranafifisimekobiva.pdfIn PDF document text
    • http://constantemail.com/userfiles/file/1623143772sutenebugiperuwux.pdfIn PDF document text
    • http://abwnickersonplaza.com/uploads/files/47028607861.pdfIn PDF document text
    • http://aksaxena.com/bpms/includes/fckeditor_uploads/userfiles/file/rakerebagega.pdfIn PDF document text
    • http://1-cities.com/blog_images/blog_/file/46518236155.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=office+attendant+exam+questions+and+answersPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eee5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEE5 11048 bytes
SHA-256: b4b44e0e53bf09f1085baeb1d61404c8055e55158b4b32a66c13d6e76c9e0ec7
font_01_sfnt_off00010879.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10879 1860 bytes
SHA-256: 562d39cc93351683f3420870a5578826c1285db13c691c08f99be18f4980e560
font_02_sfnt_off0001112f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1112F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00012941.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12941 18080 bytes
SHA-256: b5b2086c4b8ade738cf99e6fa1d650e259d7e1300853abbaef757659d51f4b04

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