Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9521fd25cfc500b…

MALICIOUS

PDF

73.4 KB Created: 2020-12-24 22:08:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 7ade4672a0c8c9237011be1f7b68062f SHA-1: 2ea3f7e122d7945bc75f700b39feb0c4b2abe0b8 SHA-256: f9521fd25cfc500bec7fca07ff7084d537c212117873d4adf78fec9a03ef1c1a
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that points to a suspicious domain, identified by heuristics as a potential phishing or malware distribution vector. 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, likely as part of a phishing campaign.

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://traffset.ru/aws?utm_term=types+of+charts+reports+in+ssrs PDF link annotation
    • https://kakawugob.weebly.com/uploads/1/3/0/9/130969990/xurovabaxenubudaxuj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481056/normal_5fcc2b033593c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415537/normal_5fa69e2f8e28a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407991/normal_5f98c22240223.pdfIn PDF document text
    • https://cdn.sqhk.co/rodoruwuwab/Ckiguja/tegejuz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410989/normal_5fc98ca7423bb.pdfIn PDF document text
    • https://cdn.sqhk.co/pekebugus/Phd2Egj/bethesda_prayer_hall.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375507/normal_5fae2ce667bab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453900/normal_5fe0e9df58810.pdfIn PDF document text
    • https://xesejiru.weebly.com/uploads/1/3/4/7/134716288/revobarolal.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/sazomo/diabetic_ketoacidosis_guidelines_new_york_presbyterian.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e354b266-2be6-4b24-8429-184fa52c3ecd/hp_zbook_17_g3_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2196e667-6ab5-4822-87d8-d8cb0824cd4f/nuzajajewumaxewaxopox.pdfIn PDF document text
    • https://s3.amazonaws.com/gagagakigibapo/26223722942.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_off0000e049.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE049 5124 bytes
SHA-256: da0cd3627555fdfcec2056c6dec989429223e350f4857e1bbdab46a8c0473f9f
font_01_sfnt_off0000f1bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1BF 11508 bytes
SHA-256: 68f52906a9615f62724002b4b058ab8bba7699da7e8849c0028a24981030416c

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