Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fe2983c0b9c9ebc…

MALICIOUS

PDF

79.9 KB Created: 2021-09-15 19:02:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 4931b5149dcc569f681bb06c7e48b67d SHA-1: e5dc8c38125fc40bb04bf8be45086e841d0619db SHA-256: 2fe2983c0b9c9ebc34e67825561d96bad028c4d31bbf0bb2300fc9021236bd56
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, with a high-severity heuristic indicating it's a password-protected archive lure. The document contains numerous URLs, many pointing to compromised WordPress sites, suggesting an attempt to host or distribute malicious content. The presence of embedded URLs and the overall structure indicate a phishing or malware distribution attempt, likely using a password to evade initial security checks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://laborke.ru/uplcv?utm_term=how+to+get+into+a+locked+phone+without+resetting+it PDF link annotation
    • http://www.patriarca-batiment.com/ressource/site-image/files/puzuvalabiwisosa.pdfIn PDF document text
    • https://idfusionllc.com/wp-content/plugins/super-forms/uploads/php/files/93f21d2e28034126731ec9ce503077e0/23787963213.pdfIn PDF document text
    • http://netart.hu/userfiles/file/3511095313.pdfIn PDF document text
    • https://archcosmeticstudio.com.au/wp-content/plugins/super-forms/uploads/php/files/39b48ce90680fd246e31921e72715028/siwusesixon.pdfIn PDF document text
    • http://johnlillylaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/zupesozodojiwetinujagi.pdfIn PDF document text
    • http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/161412cab3375d---duliga.pdfIn PDF document text
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/8ulguis5mi94e6r12u2kbe6r0o/ronovemozeguroveben.pdfIn PDF document text
    • https://tutorsbureau.net/userfiles/file/womef.pdfIn PDF document text
    • http://centreforeffectivecoaching.com/media/file/52240481075.pdfIn PDF document text
    • https://pioneerlift.com/upfiles/editor/files/93681884664.pdfIn PDF document text
    • https://meesens.be/KrMee/Tekstverwerker/xufugagotegaw.pdfIn PDF document text
    • https://www.creativetalentnetwork.com/ckfinder/userfiles/files/rodemagujanotegaboton.pdfIn PDF document text
    • http://hasomedia.com/userfiles/file/zibab.pdfIn PDF document text
    • https://mountmoriahcamp.com/media/gopanokaverexewem.pdfIn PDF document text
    • https://onderhoudnlgarantie.nl/upload/file/30876931318.pdfIn PDF document text
    • https://clinicaabrahaoosta.com.br/ckfinder/userfiles/files/fibumupusuk.pdfIn PDF document text
    • http://www.sbawerribee.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/161357c567d393---xozumenix.pdfIn PDF document text
    • https://nirmalujjwal.com/public/ckfinder/userfiles/files/28391599308.pdfIn PDF document text
    • http://kbo.pl/ckfinder/userfiles/files/turixurigikifixexusi.pdfIn PDF document text
    • http://www.octopus-quatuorvocal.com/ckfinder/userfiles/files/77323108064.pdfIn PDF document text
    • http://lagunaapartman.hu/images/user/file/5072690709.pdfIn PDF document text
    • http://hydrem.ru/images/file/11230009975.pdfIn PDF document text
    • https://learnrkbin.jugalbandiresearch.com/ckfinder/userfiles/files/nuvigotufixowu.pdfIn PDF document text
    • https://www.superioreagle.com/wp-content/plugins/formcraft/file-upload/server/content/files/161340b3648306---77056412323.pdfIn PDF document text
    • http://smartpaintingplus.com/userfiles/files/99896333810.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_off0000d485.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD485 17008 bytes
SHA-256: 9a43bea3a4ff3d55e381f123ba9113df1ce9bc996d689d81db2c4839e4f48d46
font_01_sfnt_off0001002f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1002F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011846.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11846 11064 bytes
SHA-256: ac26bcf7fd414d2264f186f3381d4f73f81c1447f0e699b769982c2abafecfd3

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