Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0cb53636a86ad82…

MALICIOUS

PDF

65.9 KB Created: 2020-11-26 02:53:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ea7d978819e46e121295e34efa3bbfce SHA-1: 1746b3918c45d8e5bfc339fb6a4b2884e5a2bb61 SHA-256: d0cb53636a86ad8232d2d954b4909e464dc91518be0715ecc1a015f5df2ff689
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or scam attempt. It contains numerous external links, with one pointing to 'https://trafffi.ru/123?utm_term=heat+surge+adl-2000m-x+manual', suggesting the document is designed to redirect users to a potentially harmful site. The presence of embedded JavaScript, though not fully detailed, further supports malicious intent, likely for obfuscation or redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/123?utm_term=heat+surge+adl-2000m-x+manual
    • https://cdn-cms.f-static.net/uploads/4369930/normal_5f8ff29248d2a.pdf
    • https://jamuseramomuf.weebly.com/uploads/1/3/1/8/131871426/4dcd253ef2bc51.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/pisik/timesaver_speaking_activities.pdf
    • https://s3.amazonaws.com/xetasif/begopovotopifadus.pdf
    • https://uploads.strikinglycdn.com/files/23a990c4-2fc7-456a-8e13-8983478da0eb/singularity_is_near.pdf
    • https://s3.amazonaws.com/gowupuzokowuxes/67095498440.pdf
    • https://uploads.strikinglycdn.com/files/257f5acc-3a82-425b-8394-2d9139e6e0fb/80809641444.pdf
    • https://uploads.strikinglycdn.com/files/49443108-dc14-4cde-a6eb-cccb6fe017f9/powerflex_400_user_manual.pdf
    • https://s3.amazonaws.com/xajowu/aetna_otc_catalog_2020.pdf
    • https://uploads.strikinglycdn.com/files/10b7a9f0-7495-4bb3-9fe7-61f4fc2e748f/kodak_easyshare_software_manual.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c577.bin
26abbfd3279bb19851d252a832f3cd9350d800fa3e4138d38da490b29a323fb0
pdf-font-stream PDF embedded font (sfnt) at offset 0xC577 5480 bytes
font_01_sfnt_off0000d80b.bin
405eb4d0a481a655d598d4c0f6fbb8c7fb2362024e524caecd262ce17dadd068
pdf-font-stream PDF embedded font (sfnt) at offset 0xD80B 10408 bytes