Malicious PDF — malware analysis report

Static analysis result for SHA-256 3295a8bb9b79f63d…

MALICIOUS

PDF

67.1 KB Created: 2020-12-17 19:17:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: a0689645644cb3f5f058910dafb754b3 SHA-1: e88e02f5d610952f00feb775058ce01d4fcaadd8 SHA-256: 3295a8bb9b79f63d8771e130c99eca9376a0510a0d5634b30a366a9b7b802ac8
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, aligning with spearphishing tactics.

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://trafficel.ru/123?utm_term=bioaccumulation+and+biomagnification+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4411493/normal_5fbb83400166d.pdfIn PDF document text
    • https://datugabow.weebly.com/uploads/1/3/4/7/134745554/jadujatiraz_nafolibe_dizepajogazuz_xexazewidolelat.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495251/normal_5fcefc8f688c5.pdfIn PDF document text
    • https://navaraze.weebly.com/uploads/1/3/4/6/134682655/xivetipusuxu.pdfIn PDF document text
    • https://sakotitalivuvu.weebly.com/uploads/1/3/4/8/134887700/2210586.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393639/normal_5fab7efa5b02b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412894/normal_5fa1f52346bc2.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/podawakumepewez/nios_books_in_hindi_medium_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc2ae6d2-cea2-482c-b907-8370fd8a70e7/xeloti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9fc2f3d-59a8-47aa-91ea-187c3746e3bb/twin_county_wrestling_districts.pdfIn PDF document text
    • https://s3.amazonaws.com/rodigapigeta/46416353532.pdfIn PDF document text
    • https://s3.amazonaws.com/bitajemisajoz/vapevegin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/213adaa6-d8b6-44ba-94fc-7fc2a31b4d18/62465367008.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_off0000c987.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC987 5388 bytes
SHA-256: e7aa6919d5a9a19ea5a32677a31ba4982c715cc7a4b55cda8bf46936585d0e81
font_01_sfnt_off0000dbd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBD0 10456 bytes
SHA-256: 69a6621c1d93a2640ec07a374ab408299334dc9fe5c314d0dc9a95adfb82c089