Malicious PDF — malware analysis report

Static analysis result for SHA-256 85dd67be8e307aec…

MALICIOUS

PDF

75.7 KB Created: 2021-02-17 04:49:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: e1239a624861981cfed3ff3ea58bb787 SHA-1: 2531ff757f4dee07f53b4f6146226248a642e0df SHA-256: 85dd67be8e307aecdea0e9195dc057c61a6d12fe86e7b0a8d2f891ea7fa4d148
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI that directs the user to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, potentially for credential harvesting or further payload delivery.

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://bologen.ru/aws?utm_term=dyson+v6+absolute+cordless+vacuum+battery+life PDF link annotation
    • http://ladunalufim.iblogger.org/gelosuw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450355/normal_6029a6c8ea081.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383792/normal_602c60a9a1426.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385011/normal_5fdeb1b697734.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454811/normal_5fc80c68c6871.pdfIn PDF document text
    • http://filanion.online/semiosis_social8mvql.pdfIn PDF document text
    • http://rimka.xyz/ravutuwelorur9bsz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409413/normal_5fe0bd75e9c1a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402940/normal_5fd16e7b0b81d.pdfIn PDF document text
    • http://detonic-shop.website/schering_bridge_theoryu2dky.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/megulu/10267059756.pdfIn PDF document text
    • http://xidozuk.rf.gd/samsung_galaxy_s5_for_sale_australia.pdfIn PDF document text
    • https://s3.amazonaws.com/fuzafuzeruwit/54419565200.pdfIn PDF document text
    • https://s3.amazonaws.com/kigavanus/15285629457.pdfIn PDF document text
    • http://nolutujurevovi.epizy.com/rowdy_baby_status.pdfIn PDF document text
    • https://s3.amazonaws.com/libowebujakux/pasteurization_and_sterilization_of_milk.pdfIn PDF document text
    • https://s3.amazonaws.com/jazamerijekufol/lukovexija.pdfIn PDF document text
    • https://s3.amazonaws.com/rurosaveruk/animal_world_map_free.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_off0000e99c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE99C 5624 bytes
SHA-256: 3a6da43839c9782bca15b00b671685c1bf835bfa66709586062de8ac9451d635
font_01_sfnt_off0000fcb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCB3 10864 bytes
SHA-256: 0e26b09fe7906c0f167a8793a1b9817822f8a76011ebadd1293b86ea2d7c68ee

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