Malicious PDF — malware analysis report

Static analysis result for SHA-256 05a1d286753549e7…

MALICIOUS

PDF

69.7 KB Created: 2021-02-14 11:40:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 16ef10b9b8fd71b40b16e1ab07099738 SHA-1: c7af25343b687b8a77eddb758b67de3ac6756401 SHA-256: 05a1d286753549e7951d080e8f301a4e466a198ae66c39843dcabaeffdf3f51b
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://maypoin.ru/wix?keyword=digital+forensics+wiley+pdf PDF link annotation
    • https://cdn.sqhk.co/zodozane/mK0ltie/jekag.pdfIn PDF document text
    • https://cdn.sqhk.co/sidamebo/JjhfdZi/nopafevumagawaxiw.pdfIn PDF document text
    • https://tezifotunojoke.weebly.com/uploads/1/3/0/7/130776805/0a4bb68fd17d0.pdfIn PDF document text
    • https://porepegozid.weebly.com/uploads/1/3/6/0/136050151/dosariwexufazurin.pdfIn PDF document text
    • https://wetogukonitama.weebly.com/uploads/1/3/3/9/133997956/406564.pdfIn PDF document text
    • https://cdn.sqhk.co/nezuxada/dnqhaUW/defender_guard_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/veletafi/chjgjix/metal_soldiers_2_game.pdfIn PDF document text
    • https://sadebisoj.weebly.com/uploads/1/3/2/3/132302749/raxosodikikoxe.pdfIn PDF document text
    • https://rogebanapixiwo.weebly.com/uploads/1/3/5/3/135343373/kodetetozoga-mirilajizoxovu-vefanixi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gawabog/fiddle_jungle_guide_s8.pdfIn PDF document text
    • https://s3.amazonaws.com/fapaga/nilotopovejufugatojigugol.pdfIn PDF document text
    • https://s3.amazonaws.com/tonemakopinibem/87498706151.pdfIn PDF document text
    • http://bugelinuxobeva.epizy.com/69966273185.pdfIn PDF document text
    • http://kesekerezox.epizy.com/pink_platform_sneakers_outfit.pdfIn PDF document text
    • https://s3.amazonaws.com/rodakarugupoko/41201687306.pdfIn PDF document text
    • https://s3.amazonaws.com/rudelazifizuvo/gestational_diabetes_guidelines_ada.pdfIn PDF document text
    • https://doi.org/10.1002/9781119262In 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_off0000d416.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD416 5516 bytes
SHA-256: b5f73d327851bf4d5f317412b09f9843aca136a733077a4e8b23264c3f33d9fd
font_01_sfnt_off0000e70b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE70B 10136 bytes
SHA-256: 92636f1b21c46b3fd109b23c2983ecb035c29ec70a0b1f0c8ddeb4e0a3fabd1b

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