Malicious PDF — malware analysis report

Static analysis result for SHA-256 c61c0d1109404788…

MALICIOUS

PDF

74.3 KB Created: 2021-02-27 05:59:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 04d360ed331d3258f19e6361623503cd SHA-1: 6c5dead49ba975c811ef7e92129a5e9df82e8370 SHA-256: c61c0d1109404788e5df1c3bfd211aa5f07a5d6a04e439c114e3ef07d7d158c3
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It contains an external URI pointing to a URL that appears to be part of a link farm, likely intended to distribute further malicious content or redirect users to phishing sites. The document body, though heavily obfuscated, contains keywords related to game hacking, suggesting a lure to entice downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://xezojetit.ru/wix?keyword=descargar+rival+fire+hackeado PDF link annotation
    • http://pasikufopubiwo.mypressonline.com/55291110481.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488810/normal_5fc84cd5d10b1.pdfIn PDF document text
    • https://wiwanozamo.weebly.com/uploads/1/3/4/3/134306351/12c9168392.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483856/normal_5fdea394a45b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461746/normal_5fd661b49b015.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409997/normal_60286328a6bb8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391602/normal_5fd0e9bc9078e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469836/normal_60316d8313201.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467586/normal_5fddf79bcb951.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470218/normal_5fddfa144917f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381098/normal_60353f105018f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dojomasamolazib.epizy.com/velurikixegebepajibugo.pdfIn PDF document text
    • http://gogidovegesoxe.epizy.com/chrome_ing_proxy_script_long_time.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_off0000e6a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6A2 5404 bytes
SHA-256: 3692f60ef993d5876c88622742569ddb227f76fc485e0ca76c0b96f514805d3e
font_01_sfnt_off0000f90b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF90B 10380 bytes
SHA-256: 5ed878b8ea167921c11fa85e04d8416ebdf17306852f71e4a769ee3c9a979929