Malicious PDF — malware analysis report

Static analysis result for SHA-256 00cbeff73118796f…

MALICIOUS

PDF

70.4 KB Created: 2020-11-19 19:32:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 8743195449396e62ffdcd3923b7735f0 SHA-1: 14536fa888e0c7b91645e637464bb042519b2e6a SHA-256: 00cbeff73118796fe885a8db61998ced0f2b9b06848a80b048676e3bde62cf92
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. It contains an embedded URI pointing to a suspicious domain, likely intended to host a malicious payload or phishing page. No scripts were extracted, but the presence of an external URI in a malicious PDF suggests a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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://trafffi.ru/strik?utm_term=diversity+in+families+10th+edition+p PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4476148/normal_5fb4867048f12.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419826/normal_5faafc7c885f1.pdfIn PDF document text
    • https://nobinetezo.weebly.com/uploads/1/3/0/9/130969761/bosumikigisefa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406481/normal_5fb28283821f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388416/normal_5f907de5caa8e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/875f38a9-d937-4f20-9747-7c312858d4b4/soxewomawomuju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6cb1afe1-2a1e-485e-9cee-216a65f5e91a/43493715142.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f04864c-88e8-41e3-b73d-94ac07c6846c/89429976721.pdfIn PDF document text
    • https://s3.amazonaws.com/kovilowab/airtel_recharge_plan_list_2018.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_off0000d37e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD37E 5636 bytes
SHA-256: 0c3044d40e57754681c1f577b53af9c5b12003f385ad5fe4e8a0a491b8e9695e
font_01_sfnt_off0000e696.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE696 11204 bytes
SHA-256: b0ef6ff82e2a3982a9b9bb23eff59f313eb477249bb70fef080dddba42f542ba

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