Malicious PDF — malware analysis report

Static analysis result for SHA-256 108d4621b6e782b7…

MALICIOUS

PDF

63.4 KB Created: 2020-11-27 10:40:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 7f34c24bbf86afdd24063f3fa50fb87e SHA-1: d300aa4ae8e4e78bcb65353bf1ee020edde3b9e1 SHA-256: 108d4621b6e782b790de4d9f1c17d01f9423e99f5d6d8629fd0b24f5b771ce24
156 Risk Score

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://trafffe.ru/strik?utm_term=royal+oaks+chevrolet+cadillac+ky PDF link annotation
    • https://xifobosakup.weebly.com/uploads/1/3/2/8/132815359/d4666c.pdfIn PDF document text
    • https://vidojibirulon.weebly.com/uploads/1/3/1/0/131070792/bba0b.pdfIn PDF document text
    • https://kusebedanosude.weebly.com/uploads/1/3/1/1/131163667/1530889.pdfIn PDF document text
    • https://lagafuxomip.weebly.com/uploads/1/3/4/3/134347440/pazerorojokode.pdfIn PDF document text
    • https://bugalesatu.weebly.com/uploads/1/3/4/3/134309104/5510388.pdfIn PDF document text
    • https://zififawatef.weebly.com/uploads/1/3/4/3/134384507/9081072.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/mupukesunobaga/91401890855.pdfIn PDF document text
    • https://s3.amazonaws.com/fajetufekejo/97107006485.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/guxodogefadazar.pdfIn PDF document text
    • https://s3.amazonaws.com/tinezedu/40183246468.pdfIn PDF document text
    • https://s3.amazonaws.com/nonabafat/appalachian_mountains_climate_type.pdfIn PDF document text
    • https://s3.amazonaws.com/lanubili/dudifuxedaparesubom.pdfIn PDF document text
    • https://s3.amazonaws.com/welutizenop/best_online_auto_repair_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/american_recreation_products_boulder_co.pdfIn PDF document text
    • https://s3.amazonaws.com/dazemi/candy_crush_saga_for_desktop.pdfIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/99878909783.pdfIn PDF document text
    • https://s3.amazonaws.com/fokapikow/54506011052.pdfIn PDF document text
    • https://s3.amazonaws.com/mujevubutukoxu/6905858293.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_off0000bc8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC8E 5260 bytes
SHA-256: 6bf7959ff834fb26bf29def07163416a93717b1997f51ca2b6a0845d0d6fed1f
font_01_sfnt_off0000ce7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE7B 10168 bytes
SHA-256: 3aac8605aab9657500e3ba386d6f96e503ba653c5fd8acfdde194c0ccf0ab9b1

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