Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ee89f2050fe28cf…

MALICIOUS

PDF

70.1 KB Created: 2020-11-24 06:43:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 70af7bbbb925c274929f835b42ad57c0 SHA-1: db9a471a8875e49113dd45de740b1d542fd14558 SHA-256: 7ee89f2050fe28cfd7cab881c622c07e7e393c29a310cd750da9434418c49fd1
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/aws?utm_term=akcent+songs+full+album+free PDF link annotation
    • https://sulorajezute.weebly.com/uploads/1/3/4/8/134854577/2100327.pdfIn PDF document text
    • https://xujaxivef.weebly.com/uploads/1/3/1/4/131438557/13df09d87a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/41b88dce-7514-4c9b-af4a-eca55e541471/71077929164.pdfIn PDF document text
    • https://s3.amazonaws.com/fezenur/thin_mint_patch_real_reviews.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11e8c815-9678-4d2f-996b-34cec4596860/advanced_systemcare_start_menu_8_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ddaea9f-1058-4c62-8843-f9f1c671788a/visual_guide_to_marvel_movie_rights_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/sesafefanulokam/73195549936.pdfIn PDF document text
    • https://s3.amazonaws.com/jasadavebaga/nd_dnr_stocking_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2695486c-71fa-4beb-b560-53ea823c62b7/pumabevorukadew.pdfIn PDF document text
    • https://s3.amazonaws.com/bezegoluzose/pltw_1._2._4_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ef8bae7-18a2-4ef8-9d46-e7419912cd32/vukegamu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3afdd567-8dbd-4632-a206-b0fa48f10ec5/kitezibagifi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd747de5-cd66-4810-8581-73061a1fd0a5/26293319620.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07554b67-0efc-443c-81e4-9470e6930b0c/xiwekobadapam.pdfIn PDF document text
    • https://s3.amazonaws.com/pojojagajevuxa/wise_guy_voice.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c7ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7EC 5228 bytes
SHA-256: 9564d0bb4693422fd72b0e9768373a3616667c770f07b1b7d51cd3e3e9b66ed5
font_01_sfnt_off0000d9a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9A4 10632 bytes
SHA-256: 7a8e4b59c4ec59390595c0163e88645572b07703183e188785ced96e185b8e20
font_02_sfnt_off0000fda6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDA6 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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