Malicious PDF — malware analysis report

Static analysis result for SHA-256 73308e52ec458447…

MALICIOUS

PDF

81.4 KB Created: 2020-11-25 01:52:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: dbc2d77d6af24436b5a3afff9d527aa4 SHA-1: 5d8fa90528979629d5cd25b21c6b719757d639c5 SHA-256: 73308e52ec45844735072a745b725b3e3792b443b10439c82857a8210ad3d32a
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 0.9997

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://traffking.ru/strik?utm_term=minecraft+survival+things+to+do+list PDF link annotation
    • https://vimasavugaf.weebly.com/uploads/1/3/4/5/134587410/tuvoxepuzunobut-lidizunekafu.pdfIn PDF document text
    • https://suzotavuni.weebly.com/uploads/1/3/4/7/134765747/7bb3812b2f5ca53.pdfIn PDF document text
    • https://kupanonul.weebly.com/uploads/1/3/4/6/134682697/40a5e5.pdfIn PDF document text
    • https://fukokegoxa.weebly.com/uploads/1/3/4/4/134463136/63fca5e2f94d54a.pdfIn PDF document text
    • https://dopuxaponaxu.weebly.com/uploads/1/3/2/6/132695391/tezulejosolula_nilavasivaxisaf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tuxutedi/wekojat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d3c6a8b-4c93-4c00-94aa-87beafa7bb86/city_of_omaha_trash_complaints.pdfIn PDF document text
    • https://s3.amazonaws.com/risalenefazozo/ikea_crib_sheets_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/667046c9-00a6-4ba9-838d-ae5d7ae7cdb7/libro_sarita_para_primaria_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/megodipewukitoj/lawijip.pdfIn PDF document text
    • https://s3.amazonaws.com/bezegoluzose/ronemudofol.pdfIn PDF document text
    • https://s3.amazonaws.com/nepawigexa/wujexamozusad.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/transistor_amplifier_file.pdfIn PDF document text
    • https://s3.amazonaws.com/resixexi/black_and_decker_blender_parts_near_me.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010280.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10280 5348 bytes
SHA-256: b37d24863359dc9f3c3ded9b812de852c4bef6f8c90e627b03014702e53129f8
font_01_sfnt_off000114ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114BA 10800 bytes
SHA-256: 6bfb154da8b4b525c6e4cf2d472dbe9db4a6226271c608f7ff7a4fe832150541

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