Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d697dcbd660a178…

MALICIOUS

PDF

69.5 KB Created: 2021-06-14 22:52:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 429d5f3130d3057c8cadfc81ef0dad12 SHA-1: 24c92afd36d2a879fbc2353cb478b9b8e9bf86ed SHA-256: 7d697dcbd660a178a8086f4eadd7e0eaeafa8d1c188c93d127ba11c09e7a0ce5
186 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing campaign. The primary URL, 'https://inwebjor.ru/pbw?utm_term=free+unused+psn+codes', indicates a lure related to free PlayStation Network codes. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://inwebjor.ru/pbw?utm_term=free+unused+psn+codes PDF link annotation
    • https://fimopokiwuzik.weebly.com/uploads/1/3/4/7/134736862/kowowofuk.pdfIn PDF document text
    • https://lezojefob.weebly.com/uploads/1/3/5/3/135319065/6842272.pdfIn PDF document text
    • https://sububavujowiv.weebly.com/uploads/1/3/4/4/134460245/561974.pdfIn PDF document text
    • https://pifilapife.weebly.com/uploads/1/3/4/3/134376120/rusilapejid-woxiridovoja-vobemaz.pdfIn PDF document text
    • https://ruzutemeba.weebly.com/uploads/1/3/2/6/132681300/dobixobebupa.pdfIn PDF document text
    • https://sorudexene.weebly.com/uploads/1/3/1/3/131384015/b019cf5aca7.pdfIn PDF document text
    • https://liletizotefos.weebly.com/uploads/1/3/4/2/134234842/wonevorejaninas_bofopotegomota_mogok_gidule.pdfIn PDF document text
    • https://zorusijumabek.weebly.com/uploads/1/3/4/8/134851431/864806.pdfIn PDF document text
    • https://binimejo.weebly.com/uploads/1/3/4/6/134665204/pozugasotu-pagozepopaz-mojidudexedomuf.pdfIn PDF document text
    • https://kitetunevoneg.weebly.com/uploads/1/3/4/7/134703129/munipev.pdfIn PDF document text
    • https://dugitesabisaxo.weebly.com/uploads/1/3/4/3/134392589/wotefugesupowib.pdfIn PDF document text
    • https://bukivobiwizu.weebly.com/uploads/1/3/4/0/134097020/dosabugo.pdfIn PDF document text
    • https://wodumipanopova.weebly.com/uploads/1/3/4/7/134731655/5966744.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jiwelifeb.pbworks.com/w/file/fetch/145212216/begovezutilo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/afd09ed9-0609-43f9-9b22-093202182d5e/best_drinking_trivia_team_names.pdfIn PDF document text
    • http://kufujibumufa.pbworks.com/f/94319790788.pdfIn PDF document text
    • http://gibuwodebu.pbworks.com/w/file/fetch/145130868/9743256930.pdfIn PDF document text
    • http://zopujoxobug.pbworks.com/f/92344940347.pdfIn PDF document text
    • http://jozeluwofe.pbworks.com/w/file/fetch/144425784/24140803086.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a4af097-5514-43de-a04f-2620a9611298/jomavisotutup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7314f5e7-6ee2-4dc7-bc54-217262121c9b/world_mythology_textbook.pdfIn PDF document text
    • http://zeladejan.pbworks.com/w/file/fetch/145283367/20380321296.pdfIn PDF document text
    • http://joxewazola.pbworks.com/w/file/fetch/144932493/wubewilubugabuworuxexesil.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_off0000d51d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD51D 4780 bytes
SHA-256: 6c42929148ef1071f9d7a3a384bcfe198cbe55caa46f11bed7d77463b677e256
font_01_sfnt_off0000e572.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE572 10364 bytes
SHA-256: ce8b905c111249d0b357437633281ed1167180f7ba7eea80c6ba20cb506fe5aa