Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9aeaa17900d9051…

MALICIOUS

PDF

72.8 KB Created: 2021-02-27 09:56:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 30f79d555b0113069c2e22ede29c3cbb SHA-1: 13399cb3541feae2bd27c93adb6902072f95b63b SHA-256: e9aeaa17900d9051b82c843216d1138a30c10cac20fec398a3d5a73e7ee1be37
186 Risk Score

Malware Insights

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

This PDF file is classified as malicious by ML and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, embedding numerous URLs that likely lead to malicious content or further infection vectors. The document body, though heavily obfuscated, contains references to 'fifty shades of grey full movie download', suggesting a lure for pirated content to mask malicious intent. The presence of multiple external links on disposable hosting further supports a malicious intent to distribute malware or phish users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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://pelibifir.ru/123?utm_term=fifty+shades+of+grey+full+movie+download+300mb+in+english PDF link annotation
    • https://cdn.sqhk.co/zogobadakedu/Kbjhged/subuxu.pdfIn PDF document text
    • https://cdn.sqhk.co/gilevetu/j0kgijh/81038029406.pdfIn PDF document text
    • https://tezadogiva.weebly.com/uploads/1/3/4/5/134522012/2781072.pdfIn PDF document text
    • https://vovikadu.weebly.com/uploads/1/3/4/5/134587732/ead2bda6536.pdfIn PDF document text
    • https://bexavulurezil.weebly.com/uploads/1/3/0/7/130738929/nojil_sozuragala_vuwamopetosiw_pipixozod.pdfIn PDF document text
    • http://xilexevu.scienceontheweb.net/33451949524.pdfIn PDF document text
    • https://cdn.sqhk.co/butiluluvuk/cr3hdRi/simple_modern_cup_moon.pdfIn PDF document text
    • https://toposizijud.weebly.com/uploads/1/3/0/7/130776562/668230.pdfIn PDF document text
    • https://cdn.sqhk.co/bedazume/3igiiQV/87251489742.pdfIn PDF document text
    • https://cdn.sqhk.co/navimoxa/jeihfhf/international_day_of_the_girl_summit.pdfIn PDF document text
    • https://bopugokux.weebly.com/uploads/1/3/4/9/134901566/c6c79c.pdfIn PDF document text
    • https://wodanosivowifig.weebly.com/uploads/1/3/4/5/134593279/976628.pdfIn PDF document text
    • http://veruvipavopa.getenjoyment.net/52979879705.pdfIn PDF document text
    • http://winoraama.website/brigitte_overwatch_guide_20192xrgs.pdfIn PDF document text
    • https://ziropiwos.weebly.com/uploads/1/3/4/3/134311351/sexenawowub_kinidezu_fijav.pdfIn PDF document text
    • https://borupulugugel.weebly.com/uploads/1/3/4/6/134620486/cb60633e9aad26.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD93 5860 bytes
SHA-256: 80251f74d4e01f8dffd190384ce6b270eb56920bfe45834053bb7660b095a856
font_01_sfnt_off0000e170.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE170 11244 bytes
SHA-256: c5354f2bbe114cc05b1db20fa5c54fe2f733ecc41119c7051f7b8c52aae56395
font_02_sfnt_off000107e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107E4 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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