Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1bff08fcb677529…

MALICIOUS

PDF

71.2 KB Created: 2021-02-24 20:36:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 841030809aa50dd4bc965cd416790a2d SHA-1: 77e353aed00c12d8d7e15cacea8f2ade1d4d5e48 SHA-256: d1bff08fcb67752956925fde6be93ced395d58113c4c9d1ceca6d40542f262ba
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that directs users to a site related to 'Diablo 2 armor runewords', suggesting a social engineering lure. While no scripts were explicitly extracted, the PDF structure and the presence of external URIs indicate a phishing attempt.

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://jottigo.ru/award?keyword=diablo+2+armor+runewords+by+rank PDF link annotation
    • http://bilapak.66ghz.com/box_tops_collection_sheets_20.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455396/normal_600fea9e54216.pdfIn PDF document text
    • http://sazaleve.22web.org/56685016062.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368760/normal_600799d14385e.pdfIn PDF document text
    • https://dibatavuxod.weebly.com/uploads/1/3/0/7/130775672/3131492.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473053/normal_601251d1b5149.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388156/normal_60221788ad43a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bibalaluroxute.epizy.com/50832034536.pdfIn PDF document text
    • http://pagujuropiwadiv.rf.gd/background_photo_editor_free_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/kiguteperilodu/96619174659.pdfIn PDF document text
    • http://wopaxigaromuf.epizy.com/autopsy_report_on_watts_family.pdfIn PDF document text
    • https://s3.amazonaws.com/gurafoga/mexita.pdfIn PDF document text
    • https://s3.amazonaws.com/rodakarugupoko/gepazizonoku.pdfIn PDF document text
    • http://jejuton.rf.gd/android_tv_box_malaysia_channel.pdfIn PDF document text
    • http://xofududegotu.epizy.com/71462746806.pdfIn PDF document text
    • https://s3.amazonaws.com/marimejerebo/kuvibunedototajatajabino.pdfIn PDF document text
    • https://s3.amazonaws.com/lowuwofuxali/introduction_to_psychology_-_lecture_notes_ppt.pdfIn PDF document text
    • http://surusulo.rf.gd/tawonamevidiropamubeme.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_off0000d9e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9E5 5500 bytes
SHA-256: 36fe345f3d091ca44f6e3ecf3b30d2046337b4c5d119f220e248f7452a077781
font_01_sfnt_off0000ec9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC9D 10284 bytes
SHA-256: 42c7d5aa339e4b2725298c1fec3a21310578d523451d79ace3793fa182865240

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