Malicious PDF — malware analysis report

Static analysis result for SHA-256 f89ae512feab1b93…

MALICIOUS

PDF

80.3 KB Created: 2021-01-18 22:05:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: fcdcf4244a0bf7c0b5c0e895598c4e5f SHA-1: 478772987d1a00577a08da90c0e1e3a3c3987c94 SHA-256: f89ae512feab1b939340aa7c36f4968bdc425603b1321a34dfdf88c7f68566f9
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL, https://traffnew.ru/123?utm_term=cross+cable+color+code+rj45, which is likely used for phishing or to download a secondary payload. The PDF structure and embedded content suggest it is designed to trick the user into visiting this external resource.

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://traffnew.ru/123?utm_term=cross+cable+color+code+rj45 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4379613/normal_5fd1f6bd27d05.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382430/normal_5fc8d038d910f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402014/normal_5fa11323f0bb0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490370/normal_5fd94b8b9bde3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468823/normal_5ffff426b2326.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412388/normal_5f99b684377f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461523/normal_5fa6d6bb20aa7.pdfIn PDF document text
    • https://cdn.sqhk.co/tijinujul/iu5igjb/84151148951.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422645/normal_5fa04e09c065d.pdfIn PDF document text
    • https://site-1252467.mozfiles.com/files/1252467/azar_random_video_chat_application_for_android.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411250/normal_5f9fd70796296.pdfIn PDF document text
    • https://site-1176114.mozfiles.com/files/1176114/call_of_gun_strike_3d_counter_terrorist_shooter.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/zufaxepixiguxax/malika_andrews_espn_reporter.pdfIn PDF document text
    • https://s3.amazonaws.com/zifilobesumafi/jubuwon.pdfIn PDF document text
    • https://s3.amazonaws.com/niporofez/pokaputewowepa.pdfIn PDF document text
    • https://s3.amazonaws.com/juvuraguvutoxif/tribal_leatherworking_guide.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

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fd61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD61 5264 bytes
SHA-256: f1d37d6a8490a36dcd7490d67d51fd5c4b08959343c1727f32e98bbbc7189632
font_01_sfnt_off00010f5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F5A 10892 bytes
SHA-256: 1b22a935caca93ad910c59ad9f9bf1c91c5ffcdc52d93b0df249abbb5aac6e9a

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