Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0462274316531eb…

MALICIOUS

PDF

74.3 KB Created: 2021-06-13 00:56:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 2eb5657b91a61c14e572450eb20fc7dd SHA-1: cf89f0acb0a58b2ae20f4734273f5b9eb4a2c6ce SHA-256: e0462274316531eb780995020a6bc496e7c2d79981a3e43b6e51bc8e631c71cc
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1204.002 Malicious Link

This PDF file is identified as malicious by multiple heuristics and a machine learning classifier, indicating a phishing and link farm attack pattern. It contains numerous external links, many pointing to other PDF files, designed to obscure the true malicious intent. The presence of a 'Clipboard command execution lure' heuristic suggests an attempt to trick the user into executing commands, likely to download and run further payloads.

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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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://laborke.ru/pbw?utm_term=your+name+full+movie+english+sub PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4497638/normal_604d9df389d88.pdfIn PDF document text
    • https://kinimozudex.weebly.com/uploads/1/3/4/4/134498073/fijuju.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488329/normal_604ef3f465158.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386081/normal_6002a1eea472e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463009/normal_5ffd1a7af3a39.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489028/normal_5fe18bcd2a9bd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457296/normal_6000411fab3bb.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4389095/normal_60b109466f5e3.pdfIn PDF document text
    • https://puzuzabijil.weebly.com/uploads/1/3/2/8/132814257/5671802.pdfIn PDF document text
    • https://susawodaf.weebly.com/uploads/1/3/2/8/132814942/3521154.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://buluwogot.pbworks.com/f/kugenakowigodufozizivo.pdfIn PDF document text
    • http://fadoposapat.pbworks.com/w/file/fetch/144448353/28580323829.pdfIn PDF document text
    • http://zosajivapesi.pbworks.com/w/file/fetch/144549351/euro_truck_simulator_2_android_oyun_club_indir.pdfIn PDF document text
    • http://mikabipi.pbworks.com/w/file/fetch/144433257/prove_45_45_90_triangle_theorem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27e1dae8-bb27-4cde-85fc-fdc543965a6f/18680101991.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de27f3da-6c30-4f30-ab1e-a8a6adc94ec8/rofevinebaxubixebop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/839216ee-1000-40ed-9721-e7458fe335da/lunavoketopefebaraxip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df584f76-69a4-4c9a-a622-6585983962fa/46923964906.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71339baa-d068-49cf-a223-1d8a7c43cfd6/how_to_update_j5_software.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_off0000e519.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE519 5344 bytes
SHA-256: 870807d103fde478f66301df69780bbb3b1fc9404116b2dd92c92cb5fd49df4a
font_01_sfnt_off0000f728.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF728 10968 bytes
SHA-256: 0b92e9f79ef47e2e49d2d2e1c76b0320de2011c32b37e5f2ac8c1b156e8d3158

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