Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3f4e567908dc5f9…

MALICIOUS

PDF

67.4 KB Created: 2020-12-22 02:57:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: bcee826fb9cba56ced58952b18866e30 SHA-1: 9d1c52b99dc9849e7bb820fa6644fa32d6de2377 SHA-256: f3f4e567908dc5f90ca7058e51b678288ee6222752af2280771c4b6c4afcb968
96 Risk Score

Malware Insights

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

The file is identified as malicious by multiple heuristics, including a high-confidence ML classifier and ClamAV detection. It contains an embedded URI pointing to a suspicious domain, likely intended to host a malicious payload or phishing content. The document body, though heavily obfuscated, suggests a lure related to 'scope of biochemistry in agriculture pdf'. No scripts were extracted, but the presence of an external URI and the overall malicious verdict strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafffe.ru/aws?utm_term=scope+of+biochemistry+in+agriculture+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4461483/normal_5fba3d006bd74.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376357/normal_5f8ec32db49e3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470703/normal_5fd08c34f2118.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404124/normal_5fa35fc4be8f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469834/normal_5fa706e443f59.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426945/normal_5fa580464e189.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374986/normal_5fa066db5965a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417414/normal_5f9b6371a9f9a.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/973507f0-052c-477b-bd5c-be5b0acd165e/pointers_in_c.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a222bb5-eb48-4f18-a917-85966fbb75e5/73502303131.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1c812f5-1c4a-4f66-8e61-33f706e80c1c/rodiwanimavatub.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_off0000c92b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC92B 5912 bytes
SHA-256: bbd6db7e8cbe24df9f38adcf5841952588dae035f5cbba67e5a1f2a64cdcf0b5
font_01_sfnt_off0000dd29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD29 10596 bytes
SHA-256: 1799196c4a69757130ef5526bc72b273354ce1c739510cc89ee29995e225edc9