Malicious PDF — malware analysis report

Static analysis result for SHA-256 647a8df5b3dabb88…

MALICIOUS

PDF

77.1 KB Created: 2021-02-13 09:25:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 18cd5dedf401e04b49f1d0974b435a7d SHA-1: b82d34770278f1f37e29890191e96c0b7781d9b5 SHA-256: 647a8df5b3dabb888c7fe4b0b6d172c05ae4c374c8e2f7490ccfce795cd0584e
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The presence of embedded URLs, including one pointing to 'seumenha.ru', suggests an attempt to redirect the user to malicious content. Although no scripts were explicitly extracted, the PDF structure and embedded URLs indicate a likely phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://seumenha.ru/123?utm_term=ffxiv+tanking+guide+5.0 PDF link annotation
    • http://moresukko.ru/wizaguvigerewim5mr3z.pdfIn PDF document text
    • https://cdn.sqhk.co/luwibajik/hhHiart/like_a_boss_song_lyrics_og_kid_frost.pdfIn PDF document text
    • https://cdn.sqhk.co/mitejapeki/jaRTgjY/66855425743.pdfIn PDF document text
    • https://cdn.sqhk.co/pepupiribojo/gcrhghd/10262193810.pdfIn PDF document text
    • https://sisuwupuwadigif.weebly.com/uploads/1/3/1/4/131437471/8118148.pdfIn PDF document text
    • https://wipomozexabezi.weebly.com/uploads/1/3/0/7/130776841/08b94e4c065298.pdfIn PDF document text
    • https://xesusilinani.weebly.com/uploads/1/3/0/8/130874458/sisalew-vezuriwizuxopor-nomutuxenube-roxaxixutozi.pdfIn PDF document text
    • https://jofudetazowus.weebly.com/uploads/1/3/1/6/131606688/7911513.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://s3.amazonaws.com/gotijejaj/abo_sadam_whatsapp_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/libosokune/aether_2_highlands_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/ziwuvijevo/xolizofuzaferalizom.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_off0000e448.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE448 4988 bytes
SHA-256: cd2b31820b78291b62b63d0f6c47b528d2ac745a1b302419e90b456f94608010
font_01_sfnt_off0000f566.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF566 10596 bytes
SHA-256: f03d43e5382c0b7d76d76332601b418b95955a3adb4ee36ee2c580d183a7ea9a
font_02_sfnt_off000119a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119A3 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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