Malicious PDF — malware analysis report

Static analysis result for SHA-256 864b2fa600b05de6…

MALICIOUS

PDF

63.7 KB Created: 2020-12-22 13:41:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: e17eadded48ad3bc0fb201c8551ad538 SHA-1: 100ebcac6045f13fdab201bca2a7840e09b55a95 SHA-256: 864b2fa600b05de6eb13f504fbe95129efae86551de0251805274c5fb940723f
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://traffking.ru/strik?utm_term=guess+the+actors+eyes PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4403937/normal_5fb67fa0f18ff.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464527/normal_5fc8598fce9cd.pdfIn PDF document text
    • https://resuzomesidi.weebly.com/uploads/1/3/4/7/134746605/a8af1ee.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/85f6f54f-462c-48a0-9daa-bb5f7b0e8b95/16x20_shed_designs.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6e663bcf5f06bcb75839b/t/5fcb3896bce7087d1ad9d43e/1607153814457/18799514697.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd0052cc750a3b5a06b62d/1606221907315/canon_pixma_mx410_ink_refill.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisi/wovelenolupotemimakokig.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxuxemu/vw_beetle_2016_owners_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/sixenogafopoj/scooby_doo_movie_soundtrack_list.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d02678c-9e5d-4b66-b223-6e82b6c15204/pavement_gold_soundz_live.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b76c5d1a-2bec-46f5-9ea8-e8702fefd21b/ejury_gwinnett_county.pdfIn PDF document text
    • https://s3.amazonaws.com/tupofelasujewas/cdia_mortgage_reporting_guidelines.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c04c6eb-f74a-4d6d-97dc-53d188be4f23/1687375779.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f02ce701-bd07-40ea-b910-3808d62cb8e9/rebodamibakiletefurunuve.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_off0000bc97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC97 4988 bytes
SHA-256: 41b233fa0ed34ae3ef7871967a1ea18e388a57b657cd9b9a1aadf40c74713cd4
font_01_sfnt_off0000cd93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD93 10880 bytes
SHA-256: 65a2a3ab17ad7862dd55d8e880f33265d995d23ce8641cb0b18b3f7ece818a1e

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