Malicious PDF — malware analysis report

Static analysis result for SHA-256 38ee295665ec0c95…

MALICIOUS

PDF

71.1 KB Created: 2020-12-02 15:47:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: d4f9c325977de245f5c6267b05c8812a SHA-1: d3a3d039864ac90a12a5768205577937ec2bbfeb SHA-256: 38ee295665ec0c95d51f5984511b97a7d0d29b4396846113284168d9ebd53ff6
156 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 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 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.
  • 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://traffine.ru/strik?utm_term=consonance+in+poetry+examples PDF link annotation
    • https://vugilove.weebly.com/uploads/1/3/4/2/134234765/wufevun.pdfIn PDF document text
    • https://rabexowubomisuw.weebly.com/uploads/1/3/1/4/131407155/f85fd7ff.pdfIn PDF document text
    • https://rikisuluwujufa.weebly.com/uploads/1/3/1/4/131452938/8346057.pdfIn PDF document text
    • https://zusaneji.weebly.com/uploads/1/3/0/8/130813769/dijuj-jowapudusi-boxuvobu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416144/normal_5fc35965d18ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417220/normal_5fafd13b81496.pdfIn PDF document text
    • https://dexetejitifite.weebly.com/uploads/1/3/4/5/134576896/5594503.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/0760567b-83bf-45ab-8f9e-b2fe8d3ab7ea/redewedusurewejabofo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46d801b3-6803-4571-9092-7f84f4e97426/sulenuborubitifawigagoli.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf59743570fb44d1f9e1eb/1606375807800/37708712814.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd149e7ad7de4c64a4ea0d/1606227102393/movalewa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71c023c0-0102-466d-b00b-b071e4aa8f96/metal_gear_solid_5_apk_obb.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc06ecff7cf8c75402886b4/t/5fc343e8a97599144e6165a7/1606632425198/75089877570.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf5b13f3de5e49b55bafd6/1606376219993/kicker_hideaway_hs10_review.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0c3cd92c50b1a1e76da16/t/5fc2be1bf8cdb769c63dc823/1606598173421/college_physics_a_strategic_approach_3rd_edition_download.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_off0000d98f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD98F 5156 bytes
SHA-256: e2ecb1d4cd37121751d9afa551d2111e756992f28a23f21ae759b69cb2bb5206
font_01_sfnt_off0000eb09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB09 10692 bytes
SHA-256: 14116f6fc90518ca131cc0ce975ca929a37e84f01eb3671f5df2e59563c39ed9

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