Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0df525fdd8a073b…

MALICIOUS

PDF

124.1 KB Created: 2021-03-25 05:14:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 51a689571adadc4589edec9905e2e048 SHA-1: 324f7bd44575f8061ebe9e00f236260bc8a1f606 SHA-256: b0df525fdd8a073b5710b694dd1a81033d39a079b6962b3079f512672e381301
126 Risk Score

Malware Insights

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

The PDF file contains embedded URLs that redirect to link farms hosted on disposable domains, suggesting a phishing or scam attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to direct users to malicious content or download further malware. No scripts were extracted, but the structure and URLs point to a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • 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 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://ponafet.ru/wix?keyword=what+are+the+9+characteristics+of+a+civilization PDF link annotation
    • http://punejew.mygamesonline.org/91819363286.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451760/normal_5ff34136e6ce1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408348/normal_6046ee2919190.pdfIn PDF document text
    • http://kodepovorivapi.mygamesonline.org/how_to_use_an_architectural_scale_ruler_1_8.pdfIn PDF document text
    • http://gixodugesu.medianewsonline.com/85789067986.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374537/normal_5fd7d8a7174c1.pdfIn PDF document text
    • https://cdn.sqhk.co/numovasovev/id9Rrgd/tekamurebaselakujazulol.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475000/normal_601f1032323a7.pdfIn PDF document text
    • https://cdn.sqhk.co/rasepotobami/25kidUa/68788512279.pdfIn PDF document text
    • https://cdn.sqhk.co/tefozakozup/3YMLgiT/belakipefolamu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371265/normal_6052e798d3d7a.pdfIn PDF document text
    • https://cdn.sqhk.co/fekigimuzib/adhbrgj/zedemonoti.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371020/normal_603f373c2136e.pdfIn PDF document text
    • http://wasegulom.mygamesonline.org/what_are_the_native_american_symbols.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486192/normal_5fdf8129d2422.pdfIn PDF document text
    • https://cdn.sqhk.co/kigowabalo/hwjiQjh/bodetomi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476446/normal_602a2813ca7d1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://d9226533-59f4-4737-ae77-cfa9cdee5378.filesusr.com/ugd/d7c203_4f23978d22fa478da39bfb9ebaa79536.pdf?index=trueIn PDF document text
    • https://ee6e56e8-c390-49d2-810b-d4defef8b9c1.filesusr.com/ugd/eda187_f988ca7f48164b708b52bea34b0fa338.pdf?index=trueIn PDF document text
    • https://36622f5a-5a1b-41a5-aa98-965156e47ac2.filesusr.com/ugd/804ff6_2ed2f1179c6e4464bde6cb13efd25387.pdf?index=trueIn PDF document text
    • https://15319a82-8c66-4906-b3c2-464277991f2b.filesusr.com/ugd/070acf_65523102f22940d792d29afb06287389.pdf?index=trueIn PDF document text
    • http://fajenadiwizowo.atwebpages.com/rawepuwopukakewisogikoles.pdfIn PDF document text
    • http://wiwosotu.myartsonline.com/xibalimirumatuzaka.pdfIn PDF document text
    • https://a49a6154-edc8-4132-95a2-c7bb8d673fe9.filesusr.com/ugd/551169_2ce0b2606d124c29ae4ef6f90cce51a4.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_off0001a67d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A67D 5248 bytes
SHA-256: b917ebc5b2b8485dd4eb011eb76117f273a2053964b656fd666cd4a569cd4aed
font_01_sfnt_off0001b86b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B86B 13480 bytes
SHA-256: 76e82f091fc642aaf45361415f59a1f23ee41d5cbb547c222a6e7848677216c0

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