Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a8eefb70ee6415f…

MALICIOUS

PDF

77.6 KB Created: 2021-08-05 18:53:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 41eaa77f63ffac1e554d47dcc2fd056a SHA-1: 932b4b85f7810504077025597a832daf3300fb61 SHA-256: 9a8eefb70ee6415f8b722240e8b7bf2ac62e34d5adc02c6788c5184197e1d6ce
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

This PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links pointing to potentially compromised websites, suggesting it functions as a link farm to distribute further malicious content. The document body was unreadable, but the heuristics strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://aryaayur.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085597101462---82618026151.pdf In PDF document text
    • http://intersonik.eu/upload/files/dinatepatizupoz.pdfIn PDF document text
    • http://www.nowsingapore.co.id/wp-content/plugins/formcraft/file-upload/server/content/files/160951b02ea491---tuganazepowamasux.pdfIn PDF document text
    • https://kisikana.hr/UserFiles/files/womepepopawetu.pdfIn PDF document text
    • https://citronixdeflection.com/nbloom/fckuploads/file/varilomivi.pdfIn PDF document text
    • https://subarini.ro/mm/file/molawupimudipokanenazikul.pdfIn PDF document text
    • https://copab.tn/216mag.svn/uploads/files/23835495715.pdfIn PDF document text
    • https://rimsball.com/ckfinder/userfiles/files/jonijadedofelepepofusar.pdfIn PDF document text
    • http://galluccifaibano.com/userfiles/file/daxonuvoz.pdfIn PDF document text
    • https://www.endthestigmacounselling.com/wp-content/plugins/super-forms/uploads/php/files/t9rt19r598q9hjd5nmkj0puup0/97228993693.pdfIn PDF document text
    • http://funagamex.vn/PhuongNamGroup/userfiles/files/14708039243.pdfIn PDF document text
    • https://angkoronetour.com/userfiles/file/67830163160.pdfIn PDF document text
    • http://piau-po21inn.com/CKEdit/upload/files/96763477180.pdfIn PDF document text
    • http://test.uebersetzungen-nesselberger.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c6ad6ee1a35---wexataxuwumapi.pdfIn PDF document text
    • http://www.klpreschool.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088de48d609d---fatodoropubivojodifevexan.pdfIn PDF document text
    • http://animalscipublisher.com/files/upfiles/file/jejefakigutulusonutoxun.pdfIn PDF document text
    • https://www.financedeclined.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16097388fe841d---53117917307.pdfIn PDF document text
    • https://mattweidnerlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac6c997fa8d---24891507984.pdfIn PDF document text
    • https://militarynetwork.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca9de97957---67349922523.pdfIn PDF document text
    • https://sts-cct.com/app/webroot/userfiles/files/dinikujavalukiduvebod.pdfIn PDF document text
    • https://niboparis.com/upload/fckeditor/files/jadogudateramuwo.pdfIn PDF document text
    • http://smartcookieacademy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160729f1fbee07---89713007819.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/160c8b2950a849---32268248076.pdfIn PDF document text
    • https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b6e6ff43e2a---56922693045.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=how+many+watts+is+a+ge+spacemaker+microwavePDF 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c9fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9FE 11020 bytes
SHA-256: 2aaa6139c628d679fc6ffa5625659d142b1abd83fa73741d6d5339021d7962b1
font_01_sfnt_off0000e3aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3AA 16284 bytes
SHA-256: adc254b58f1d69857bb5c359e9f96f93684e79889d95af856d59fd1940ad7d6d
font_02_sfnt_off00010db2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DB2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.