Malicious PDF — malware analysis report

Static analysis result for SHA-256 7030cb66c22d550f…

MALICIOUS

PDF

94.2 KB Created: 2020-12-26 08:37:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: eb6a36933c52a90a2d1fe4fb35188f1b SHA-1: f682efc5168d4689cecad81238f3012318b093dc SHA-256: 7030cb66c22d550f99fb50db48902ef027b764bb1e91ddbd216bf2cdaa2195a2
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 0.9997

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://traffset.ru/aws?utm_term=drag+and+drop+website+builder+software PDF link annotation
    • https://cdn.sqhk.co/zafupusapun/jbZjjif/karixole.pdfIn PDF document text
    • https://xekexudaxojow.weebly.com/uploads/1/3/4/3/134365032/ba408939d57f.pdfIn PDF document text
    • https://kugodago.weebly.com/uploads/1/3/4/4/134491336/7e7a39.pdfIn PDF document text
    • https://cdn.sqhk.co/nolugavetiri/jgjiWjb/puffin_web_browser_pro_apk_uptodown.pdfIn PDF document text
    • https://wavenugila.weebly.com/uploads/1/3/4/8/134852162/dc3eb139.pdfIn PDF document text
    • https://dawoxojukuput.weebly.com/uploads/1/3/4/8/134890950/5e4f9.pdfIn PDF document text
    • https://riwisasivituw.weebly.com/uploads/1/3/1/0/131070703/fakinutodunod.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/sigobija/jolumuzete.pdfIn PDF document text
    • https://s3.amazonaws.com/jakujakula/93605917221.pdfIn PDF document text
    • https://s3.amazonaws.com/toliwudalamem/un_dia_de_estos_story_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/english_speaking_course_book_in_hindi_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/dowesitobuga/dinugotafijikigewapapepit.pdfIn PDF document text
    • https://s3.amazonaws.com/buponuwebi/backup_android_phone_to_google_drive.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_off000134ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x134CA 5440 bytes
SHA-256: 61c679ed0bc25f572159c02ec871df23582db4352a8774577a06228ac711bb75
font_01_sfnt_off00014766.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14766 10704 bytes
SHA-256: 75f2de06cda2011580520f84c7ff105cb9ed2ffb37da208b3d666ed528b9f9f3

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