Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e01117becc8b559…

MALICIOUS

PDF

79.4 KB Created: 2021-06-26 04:06:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: 32d563c04ae8151324744a6a4988eeb4 SHA-1: e9557302410c87d2f884a36688695002e087e139 SHA-256: 2e01117becc8b559a01c6b29bfbc5e4378eaafd3135cf15cbb2a4a8dbb6b03f1
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The numerous embedded URLs point to compromised WordPress sites and other disposable hosting, suggesting a link farm designed to redirect users to malicious content. The document's structure and URL patterns are consistent with phishing or malware distribution campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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 https://pistant.ru/uplcv?utm_term=western+ct+area+agency+on+aging PDF link annotation
    • http://www.eflox.net/wp-content/plugins/formcraft/file-upload/server/content/files/160c5b1c10cb1b---40494201349.pdfIn PDF document text
    • http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c242433a66c---takev.pdfIn PDF document text
    • https://drainscovers.com/wp-content/plugins/super-forms/uploads/php/files/c7cab3b2f12eb91392eb6564fc3bba0f/gapirofawirifano.pdfIn PDF document text
    • https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609ea224e8a69---lagaledonarojuvejex.pdfIn PDF document text
    • http://evohome.pl/userfiles/file/retiwuvedu.pdfIn PDF document text
    • https://area34.info/wp-content/plugins/super-forms/uploads/php/files/49smmfehlgbuse65levvd42ib3/vudox.pdfIn PDF document text
    • http://penoplex24.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a81e17777e1---giwububafimulokemekur.pdfIn PDF document text
    • https://www.a2zmedical.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a68ab9dde28---20765201150.pdfIn PDF document text
    • https://immo-cjeanpaul.lu/userfiles/files/zolaverobufejakorukore.pdfIn PDF document text
    • http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/1607bb951356e8---gerexelu.pdfIn PDF document text
    • https://www.emmabowman.com/wp-content/plugins/super-forms/uploads/php/files/5fd6191614d52671d33cd114f5d208fb/sunofu.pdfIn PDF document text
    • http://amexeuro.com/an3_Uploads/file/xutixetapumekegewekiri.pdfIn PDF document text
    • https://marksiegeldds.com/wp-content/plugins/super-forms/uploads/php/files/7aebdd0d1fe218e7a97b2e0d1b7f1c2a/80358467374.pdfIn PDF document text
    • https://www.skyline-recruiting.com/wp-content/plugins/super-forms/uploads/php/files/06643a85c781a6228026528872288125/mafojego.pdfIn PDF document text
    • https://terravistahometeam.com/wp-content/plugins/super-forms/uploads/php/files/64e7c30aaf1908a7e5d3b53e1e6f97d9/wexukisigoxelokezitaj.pdfIn PDF document text
    • http://phantasos.org/userfiles/file/21560553813.pdfIn PDF document text
    • https://erdenet.mn/userfiles/file/11334990005.pdfIn PDF document text
    • https://tfnd.org/wp-content/plugins/super-forms/uploads/php/files/20ca139b2b567de6631b74f6325b8741/7517080055.pdfIn PDF document text
    • http://comp-art.ru/userfiles/file/60393568785.pdfIn PDF document text
    • https://bouveau-consulting.com/userfiles/file/tufamalukojulozasutija.pdfIn PDF document text
    • https://staffxrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/aeaa53c267953c814ed3a25c6eecd4d3/54538361280.pdfIn PDF document text
    • http://thegibbsfamilyreunion.com/clients/d/d9/d929505c7faf6263097cc97620c39d65/File/dafuxiduxega.pdfIn PDF document text
    • 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d490.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD490 10468 bytes
SHA-256: 253d81f3901779cee53761e1639db9468efbfbda93c9881ea89d77245761a926
font_01_sfnt_off0000ec89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC89 16856 bytes
SHA-256: 4a349bd0682145ee7e7b6aa2de289de4627d5d706b7bea057c47f6f12656c1a8
font_02_sfnt_off00011873.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11873 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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