Malicious PDF — malware analysis report

Static analysis result for SHA-256 02d675072ec3657c…

MALICIOUS

PDF

66.4 KB Created: 2021-03-20 20:07:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 59ff942335d29eb59346846b11269433 SHA-1: 88d455717993d2055a1916cdecad76b62d788e37 SHA-256: 02d675072ec3657c826d47257c297eed76f4f6fb2f798e8fc361c717683da60d
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 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://kuzutuzo.ru/aws?utm_term=what+are+the+functions+of+male+and+female+gonads+in+human+beings PDF link annotation
    • https://fogolaliri.weebly.com/uploads/1/3/2/8/132814342/62d69000bf.pdfIn PDF document text
    • https://jufozawuvinuxak.weebly.com/uploads/1/3/5/3/135326647/6206212.pdfIn PDF document text
    • http://eagleaff.com/how_to_connect_bluetooth_headset_to_windows_10_desktopsmz4f.pdfIn PDF document text
    • http://bukibiroxofin.22web.org/bodyguard_telugu_songs.pdfIn PDF document text
    • http://walkover.me/35708423056dc7yb.pdfIn PDF document text
    • http://supsun-aero.com/please_understand_me_ii_temperament_character_intelligence_by_david_keirseyxhr7l.pdfIn PDF document text
    • http://barcaporirternet-interbank-pe.com/industrial_revolution_dbq_middle_schoolf6n4u.pdfIn PDF document text
    • http://phtech.site/what_is_michigan_child_support_formulal9ctj.pdfIn PDF document text
    • http://phulop.store/kovutodefaxetusdn0s7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zudosikewemer.epizy.com/wamozidekidazefesubagi.pdfIn PDF document text
    • https://d896c2b7-539c-4146-aa8a-b39d26e096d8.filesusr.com/ugd/a98ecc_66b983faef5f48489da56aeadc8b71e1.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/3cd8f866-94c5-4842-a042-044511d843a7/panasonic_kx-tgp500_default_password.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d83c68d-22fa-4feb-825b-d8999446f417/nonazaxenofudixorofopa.pdfIn PDF document text
    • https://af18ad75-7652-4b25-b9e0-8da5fded0af1.filesusr.com/ugd/529385_ebab5b20546a45f880b73f88c799d863.pdf?index=trueIn PDF document text
    • http://varoxekoduv.epizy.com/ladilapetawatufewokuwada.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fbe6fdec-dfdc-469f-ac8c-f9bb8dc1d95a/nisadukiroru.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_off0000c702.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC702 5588 bytes
SHA-256: 2f8fa9a7c45602b01b86cb820152f614fd79a46fea52c2ccdd89c244dd38b647
font_01_sfnt_off0000d9e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9E6 10004 bytes
SHA-256: 84e417f459d93515eba8d3277dd9a2110953cdccb15dccb26bf7607e4f04a382