Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b7a1511071314c4…

MALICIOUS

PDF

93.9 KB Created: 2021-03-11 05:32:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: b4f94a3bcb54a72b28445a5f1b48cbe1 SHA-1: 2ae04054f25c4f5d086fac9b89ece676eb93f41a SHA-256: 7b7a1511071314c4fd580b6a596ca234252d11fdd4dc87a584f3d0a6734e02f6
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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://xezojetit.ru/wix?keyword=hive+mind+guide+deutsch PDF link annotation
    • http://bebalezuve.medianewsonline.com/nonetazugasoje.pdfIn PDF document text
    • http://nemugub.mywebcommunity.org/jejawexebiset.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495536/normal_5ff47d2ea8141.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488317/normal_5fdbe2ac8c488.pdfIn PDF document text
    • http://revodegasiger.sportsontheweb.net/neil_gaiman_quotes_stardust.pdfIn PDF document text
    • https://danatitajovo.weebly.com/uploads/1/3/4/1/134108849/4910311.pdfIn PDF document text
    • https://fidegobopoj.weebly.com/uploads/1/3/2/8/132815019/keziludowalojo.pdfIn PDF document text
    • http://wobafobigo.mywebcommunity.org/pokemon_sword_strategy_guide_reddit.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467007/normal_60017f863bf76.pdfIn PDF document text
    • https://zalivibutadugaf.weebly.com/uploads/1/3/5/3/135391941/gubatevekeravi_jozitowif.pdfIn PDF document text
    • https://magudutetu.weebly.com/uploads/1/3/1/4/131437318/441123b9de3.pdfIn PDF document text
    • https://levavepisemewo.weebly.com/uploads/1/3/5/3/135303450/wedexawuduf_kigeper.pdfIn PDF document text
    • http://bobujopolodusol.mygamesonline.org/wonder_book_pages.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://05e27880-d5e1-4d3d-8428-ba943e9300bc.filesusr.com/ugd/b56239_cf4ddcd42d454c25b20c6fa24177db7e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/da6ee634-e9d1-4bb3-b94c-2847691f1d18/66442987631.pdfIn PDF document text
    • https://8d94caac-80d5-4f6d-a73a-04ed47837dc1.filesusr.com/ugd/585b1d_372cef22c554451bbe6b13f092bb4d0c.pdf?index=trueIn PDF document text
    • https://8c1dc56a-a131-4b43-acff-3635b9115217.filesusr.com/ugd/90423f_fce2592d1cf04622890b9de470f4bc99.pdf?index=trueIn PDF document text
    • https://329f26c8-0235-4118-8622-173d264d9cf1.filesusr.com/ugd/221f3a_99db82ef6b404625995849ea70c2c980.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/3253f77e-49a2-48e7-bf9d-f485d6e25668/66740655517.pdfIn PDF document text
    • https://911f1565-2faa-4874-b261-330d521e7362.filesusr.com/ugd/f46427_9c66d2f1916748c092aedec8f04d1744.pdf?index=trueIn 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_off000127b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127B9 5036 bytes
SHA-256: 4f9038f792bd44ba411cbe89b24bb1c7872d4722f6e383bd48ad172bc586b98b
font_01_sfnt_off000138c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x138C3 16172 bytes
SHA-256: 3cac0a72ce50790943618fe6fdaa93e19403408fa10957c1b160309c2552666f

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