Malicious PDF — malware analysis report

Static analysis result for SHA-256 6dd82c59bd0819a2…

MALICIOUS

PDF

69.9 KB Created: 2021-03-05 11:36:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 2ea1d6b704ec243c1a9646eb5812e8c6 SHA-1: 6d5c07da65bd8b500b038da6137b72f1ed611774 SHA-256: 6dd82c59bd0819a26c385860ec609b9bcb27d2aeb9f18e8dad8fb69686a8c83e
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://zajinet.ru/award?keyword=focusrite+18i8+power+supply PDF link annotation
    • https://cdn.sqhk.co/suxejatove/J8hahaX/racing_car_3d_game_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/gixotagokezu/jjbgcic/xujujawinovixibazilek.pdfIn PDF document text
    • http://exclusmxpn.com/74063535113ak4w2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366347/normal_6000fa7a5bcb8.pdfIn PDF document text
    • http://selesomiv.22web.org/73259811649.pdfIn PDF document text
    • http://dommasters.site/geronimo_stilton_collection_booksaq5ig.pdfIn PDF document text
    • http://hookup157.online/80746697347b0fdg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476766/normal_6004069d88b79.pdfIn PDF document text
    • http://temilops.xyz/878803339098nqcv.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
    • https://6d5fec37-5936-4ae8-8938-03a86e982f09.filesusr.com/ugd/d4da64_d098161032bd4313aca1de692bcaa524.pdf?index=trueIn PDF document text
    • https://c064424b-11a8-4e39-a524-24a74bcd733d.filesusr.com/ugd/54e393_c6e8e83f878540c7aa4de244807edb4d.pdf?index=trueIn PDF document text
    • http://voferinokubusob.rf.gd/sozilubupexataxilo.pdfIn PDF document text
    • http://jixojamut.epizy.com/acer_model_h236hl_manual.pdfIn PDF document text
    • https://d115d978-d96a-40c8-9764-5d959708fc35.filesusr.com/ugd/436160_3326e193624d4c80a6b434b96ef550f2.pdf?index=trueIn PDF document text
    • https://d8ec88ce-93b1-4b83-b294-7016fd5b5063.filesusr.com/ugd/366252_2e3a666da95449b9b2e42985087bf026.pdf?index=trueIn PDF document text
    • https://f8b2de7a-6012-4721-b8f1-df5267d6bb95.filesusr.com/ugd/8ebb60_41e9c29089a2420ea83f0bea27631f65.pdf?index=trueIn PDF document text
    • https://d75bbb92-b0e4-4b50-83e6-2443e695523b.filesusr.com/ugd/bc73b9_2a98fb1f68de40059bf8e69611ba54e2.pdf?index=trueIn PDF document text
    • https://fad58b31-c538-4d3f-828d-7998eec853b9.filesusr.com/ugd/7e6083_3d44b0975d7747689ae092ba38c9f23f.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c7a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7A7 4888 bytes
SHA-256: 05b09023f3461439789574c8a0c4f314303ae03951847250869ce2e94b72e62b
font_01_sfnt_off0000d883.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD883 10316 bytes
SHA-256: a3efe1320777725ee41a101bfee8b66c86e74d5208ce7c762c8350ddb3408f9f
font_02_sfnt_off0000fbe8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBE8 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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