Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e62108c9544189e…

MALICIOUS

PDF

73.5 KB Created: 2021-06-08 18:19:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 5e4f757eaee5b4da86787c469e3815c4 SHA-1: e1f491001ca68dfb0acec4d54fbaba4ba2777e9e SHA-256: 6e62108c9544189e101230464078d2c540deb3de4c3e71b9ebb1e72ec4319353
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-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.
  • 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://wastran.ru/pbw?utm_term=vishnu+shastra+telugu PDF link annotation
    • https://nadunetuvopalo.weebly.com/uploads/1/3/4/8/134884029/5123613.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366011/normal_6008f7952e699.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367289/normal_60bef61dbceea.pdfIn PDF document text
    • https://popuverixi.weebly.com/uploads/1/3/1/4/131438274/zaxeko.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372100/normal_60b8daa503848.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/eca798e8-0b02-4199-9965-60069c033e0a/what_hair_color_will_make_you_look_whiter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a42e832-e53e-47ff-b9fd-3367ec5ea805/dell_latitude_e6510_i7_release_date.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3ee4a1c-9c42-4287-817c-b84494403eae/runediwitivokarar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8933057d-5b91-42da-8197-7127170977e2/71546879492.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8441caeb-a460-4d54-86fa-19beb6387775/summary_of_marketing_management_class_12.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/146b3c92-d55d-4a7d-9413-5333cb433224/how_to_play_family_feud_online_zoom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93a95b14-0316-4994-89ff-61e05ec5d553/3751081269.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/425bd5b4-0fe6-4bc2-8877-43f2206b79ff/vudagepudirodojefakunexot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e4dc115-7fd4-4a68-9e8d-bf16e5c74806/principles_of_project_management_training.pdfIn PDF document text
    • http://nerobedevu.pbworks.com/w/file/fetch/144457689/super_bomberman_2_snes_rom_espaol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4104b4c-5081-46cc-8816-7c6bfce16e79/nokedawejibopes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef122072-7212-458c-a57c-9c3583d9c392/rocketfish_wireless_speaker_kit_rf-whtib-a-c_review.pdfIn PDF document text
    • http://gogoporiwo.pbworks.com/f/bob_proctor_a_ciencia_para_ficar_rico.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e6db482-ebd4-48d3-83e1-dd048964b54c/night_shift_jobs_hiring_asap.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_off0000e2c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2C3 4912 bytes
SHA-256: 4c5026790fd49d2d0946cf115a3a9569d29f93fd82e7e9a64a8dd9bff1849ca6
font_01_sfnt_off0000f376.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF376 11320 bytes
SHA-256: 9315462647c866e05603fba6d8f7fabdf182228c7a8e9db24ffbfd18fa16de9b

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