Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e0e0ccc0629e74e…

MALICIOUS

PDF

74.9 KB Created: 2021-04-03 15:29:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: b5b0b82c22f63020904f9574d4ff0d51 SHA-1: 6ef2da49520f47edef54dfab2bc5ab669de9b768 SHA-256: 3e0e0ccc0629e74e9476302e2c33fb7ef527cd3e5a364acc0d1c202596bbb320
226 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains multiple heuristics indicating it is a link farm designed to redirect users to potentially malicious sites, with specific lures like 'mcdonalds uk application form pdf'. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. Although no scripts were extracted, the presence of suspicious and disposable domains used for hosting PDF files points to a phishing or credential harvesting campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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://resalured.ru/award?keyword=mcdonalds+uk+application+form+pdf PDF link annotation
    • http://majelogajizivo.iblogger.org/fofivupopo.pdfIn PDF document text
    • http://gitutemove.iblogger.org/15181307768.pdfIn PDF document text
    • http://mosquito.codes/how_many_calories_in_wendys_large_chili_with_cheesexjgjg.pdfIn PDF document text
    • http://jibitivi.66ghz.com/bugulu.pdfIn PDF document text
    • http://tcerkovniekupola.space/wegaxexigulikh4ym.pdfIn PDF document text
    • http://loginwithfb.site/the_walking_dead_graphic_novel_characters1kl6k.pdfIn PDF document text
    • http://contact-git.top/photography_changes_everything_marvin_heiferman6rety.pdfIn PDF document text
    • http://geosen.net/xowusemopazepus2vgm.pdfIn PDF document text
    • http://daimontimur.org/462007928075njtp.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://beea745c-e446-4317-9ad8-fe501d584c0a.filesusr.com/ugd/9196db_65a559206dbe40829eacabcb8d099d08.pdf?index=trueIn PDF document text
    • https://a179b4bb-f9e1-4b0b-8685-f881d2afde68.filesusr.com/ugd/0fdb6d_ca92c6af57574f0aa82019b32bb034b3.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/d677be30-8795-465c-9d4b-a89f4447af96/tuzofi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7fcb9e5d-0e8a-4624-b694-171e1c115803/77019840851.pdfIn PDF document text
    • http://nesitojogosew.epizy.com/equality_act_2010_summary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec83e43a-c47d-4cb8-a394-4a6256ad0121/rca_10_tablet_keyboard_not_working.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6d36d95-f54c-457d-b11b-fc157a811b35/rules_for_the_game_chicken_foot_in_dominoes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4155dbe-0cb3-4e99-b05d-5270b3d96a4c/vexokunoxa.pdfIn PDF document text
    • http://fenigubigona.epizy.com/no_iccid_number_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c82d8992-ee34-4b54-83fb-2a49112f6636/vifemedipamo.pdfIn PDF document text
    • https://b1706aec-e9b1-4c6c-9a93-f14ef4a1c402.filesusr.com/ugd/3b47cb_a3a83617bde14370bba3476f34ed9c2a.pdf?index=trueIn PDF document text
    • https://76c87692-cca9-4651-be8e-de6412dad411.filesusr.com/ugd/fdad67_c2316be397ae4307bb15dedc3f31a776.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe8579a0-e055-4d0b-aae4-b7f9b4b61544/85881445285.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e5f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5F7 5372 bytes
SHA-256: 1cbd1eb3d2b4dbf0b97aa7d841c244f4debac250e531106073ea52fabcf481fb
font_01_sfnt_off0000f833.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF833 10752 bytes
SHA-256: 2ddbd27816bcf573f79e1203cc698834caca5d634da09beebbee854781f519bc

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