Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1d2255de54cc586…

MALICIOUS

PDF

75.4 KB Created: 2020-11-24 20:26:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 5e6ba04b141d463c6725bc238b865025 SHA-1: d3f913f5ef10c182ea574af04c11480fdf40990f SHA-256: d1d2255de54cc586883256429d45ed1c12c0d9a77ef3156b1bcbde3ddc857e43
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, `https://traffine.ru/strik?utm_term=world+war+z+pdf+download`, which is indicative of a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support its malicious nature. The document body, though heavily obfuscated, contains references to 'World war z pdf download', suggesting a lure to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffine.ru/strik?utm_term=world+war+z+pdf+download In PDF document text
    • https://wosumugip.weebly.com/uploads/1/3/4/8/134867897/3132656.pdfIn PDF document text
    • https://delevesep.weebly.com/uploads/1/3/4/3/134371082/sifulebavurudikon.pdfIn PDF document text
    • https://gixawixo.weebly.com/uploads/1/3/4/3/134322292/3c9bea48.pdfIn PDF document text
    • https://pesonukakevu.weebly.com/uploads/1/3/4/8/134863065/pekotuleb_doraxokader_gojikefowofisu_vixulox.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/xuzed/98886493779.pdfIn PDF document text
    • https://s3.amazonaws.com/zafaronivaj/53023809713.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53f32fab-7b00-4121-a752-83edbd2a32ec/post_nuptial_agreement_document.pdfIn PDF document text
    • https://s3.amazonaws.com/regufojalojaza/movie_box_app_download_kindle.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c19771c-4f00-409b-894b-83021eb2f56f/94258350002.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef0d7b49-2fdc-4c12-995c-b11966ac0166/xesiwit.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_off0000e03d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE03D 4552 bytes
SHA-256: 75eed1d15370f7b58250d4bc26781fd8b34ad23e2171135e8e84e5c7d858aeec
font_01_sfnt_off0000efda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFDA 10320 bytes
SHA-256: a7791abb098c223efeacc2783e4757575baeb103c70f682e3a2135138f23f1e1
font_02_sfnt_off00011340.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11340 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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