Malicious PDF — malware analysis report

Static analysis result for SHA-256 de8bed143215877c…

MALICIOUS

PDF

67.7 KB Created: 2020-12-23 10:00:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: e97268d3bcf81833b010c9dc24a58d36 SHA-1: 1f1b8fad3d15f3f043e80452739112b679bc9fcd SHA-256: de8bed143215877ce924d510248f1e39786b1c0ef736ce3b365d6510d7bbfc95
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, identified by ClamAV as a phishing trojan. The ML classifier also flagged this PDF with high confidence. The document body, though heavily obfuscated, suggests a lure related to a game or application, consistent with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafffi.ru/strik?utm_term=adventure+escape+mysteries+dark+ruins+chapter+6 PDF link annotation
    • https://dijatetobof.weebly.com/uploads/1/3/4/3/134322453/guzukekijoti-jojatavok-vewudixowenexu.pdfIn PDF document text
    • https://tenikekiso.weebly.com/uploads/1/3/0/7/130775729/bimatizazusek.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc3676dc6d96458363207a7/t/5fcd1c06a87f9f1b19e00e2d/1607277575192/keginajiwafu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d8d024b06a7eb3fedc56/t/5fc1d7e6bc819f1cf41c520a/1606539239352/holo_launcher_plus_pro_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/wixamupelinere/74211878758.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e081be9b6939510aa493/t/5fd123b2350eb205aea887aa/1607541682203/maponomokenabasad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/acb26b32-a1e3-427a-bd0f-b988ca736ad1/98696186647.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc3ab40bdb33045eed37d5e/t/5fccb4b73ff1011540edc838/1607251136977/webebitewukojanote.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6b266bda9c57a97e6b58e/t/5fcb2f2764036b6143893048/1607151400072/37721870571.pdfIn PDF document text
    • https://s3.amazonaws.com/zasepo/robo_dwarf_hamster_care_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/indian_bangle_size_guide.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_off0000cad7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAD7 5652 bytes
SHA-256: 1cd93d959abfb99fe84efeb0a0f443715230becf26bab746a7d479602eb24006
font_01_sfnt_off0000ddf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDF7 10560 bytes
SHA-256: 823c7ba55c4a33a8fb6547dd43585eea1535b691ca7624cca3881036c97dd1a1

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