Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd91e94b39c33a3f…

MALICIOUS

PDF

73.3 KB Created: 2021-02-16 19:35:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: ff2aa6f28ebe593b71f38fa0cf1c83ca SHA-1: 3f50778cea157cae2eca11dc402fd79cd3d61c6f SHA-256: bd91e94b39c33a3ffcf1e80e27d73d2f3c19f67825fb1d9d81eb58bcaa3fc50e
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier returned a high probability of maliciousness. The document contains an embedded URL pointing to a suspicious domain, likely intended to host a malicious payload or redirect to a phishing site. While no scripts were explicitly extracted, the presence of embedded URLs and the overall detection profile suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://baarspo.ru/strik?utm_term=araby+by+james+joyce+characters PDF link annotation
    • https://cdn.sqhk.co/seseniluvus/jAbjbCe/73317732617.pdfIn PDF document text
    • https://cdn.sqhk.co/rifarako/Pypifji/epic_conquest_apk_old_version.pdfIn PDF document text
    • https://cdn.sqhk.co/genizataxom/U9jgZ7f/metaphysics_meaning_in_bengali.pdfIn PDF document text
    • https://cdn.sqhk.co/levowexesu/iiaichd/pixel_battleground_apk_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/golomamone/ejiM7hf/gajajugajevewugejumuvi.pdfIn PDF document text
    • https://cdn.sqhk.co/sipebililofo/habgejd/freeciv_android_exploit.pdfIn PDF document text
    • https://cdn.sqhk.co/fekawitaxug/ohfN8hh/5692278610.pdfIn PDF document text
    • https://cdn.sqhk.co/roretuduva/jepQhfd/picture_perfect_crossword_chapter_26.pdfIn PDF document text
    • https://cdn.sqhk.co/jolodovi/cgejdib/police_drift_racing_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/wutalididow/haH0jaA/cross_stitching_fabric_count.pdfIn PDF document text
    • https://cdn.sqhk.co/zebapomiz/jc6irhf/kovopexefabopakovo.pdfIn PDF document text
    • https://cdn.sqhk.co/tatogevi/djfTjeu/99050556684.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/lewuli/windows_10_usb_flash_drive_format.pdfIn PDF document text
    • https://s3.amazonaws.com/wazotojemov/a_thousand_years_instrumental_audio.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/ser_bachiller_evaluacion_gob_ec_resultados.pdfIn PDF document text
    • https://s3.amazonaws.com/tidigudetefumof/28687728686.pdfIn PDF document text
    • https://s3.amazonaws.com/vofadoloves/spider_man_comic_book.pdfIn PDF document text
    • https://s3.amazonaws.com/gudukupir/86952716143.pdfIn PDF document text
    • https://s3.amazonaws.com/kudefem/vobunemugasasup.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_off0000db18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB18 5312 bytes
SHA-256: ca7aad454e2f6fc7c2340ca83b99c59f22c34187bfbcc41323931b5cab26c6e1
font_01_sfnt_off0000ed00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED00 1940 bytes
SHA-256: 414d786b459f0f5d2a731291ef1b870d88176140611ada2eab9f82aaf6e76e23
font_02_sfnt_off0000f635.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF635 9844 bytes
SHA-256: 18fe07d2baaf71e17da9abe7f1a6acf1c4ce6dd98fbe641029de80ba90ef3fce

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