Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd3afad6f43e5187…

MALICIOUS

PDF

62.7 KB Created: 2020-11-29 21:35:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1aca787a9db3e2301341f165fddfb25f SHA-1: d9e748d8d2df0adbc35485358a79f0376bb693f7 SHA-256: fd3afad6f43e518785836834de78e4fa3a0eb4080854ae36df1a864b71ea5ff6
214 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, with several pointing to known malicious redirector infrastructure. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external links, suggesting an attempt to generate traffic or distribute malicious content. While no scripts were directly extracted, the presence of numerous links and the ClamAV detection as 'Pdf.Phishing.Trojan' strongly indicate a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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://gettraff.ru/aws?utm_term=circle+label+template+photoshop
    • https://wotufoxak.weebly.com/uploads/1/3/4/3/134308946/xoraxopejix_nozelawusejasak_mixereduzojefos_tuseruw.pdf
    • https://cdn-cms.f-static.net/uploads/4454677/normal_5fa3bc7a6c5e2.pdf
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/d96ddb407408.pdf
    • https://cdn-cms.f-static.net/uploads/4489061/normal_5fa9e869ce508.pdf
    • https://cdn-cms.f-static.net/uploads/4371812/normal_5fa95b7555ed8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/faluzotixupi/bee_gees_too_much_heaven_song.pdf
    • https://uploads.strikinglycdn.com/files/b5f36c40-1f52-4284-8ffc-85a8f18b7cf3/figitonob.pdf
    • https://uploads.strikinglycdn.com/files/f3d5efac-9e0a-49bc-a3c8-ec9ba520c99d/e_yener_belli.pdf
    • https://uploads.strikinglycdn.com/files/8c8ce609-c5d7-4d21-9643-dd2b961a7257/16863099156.pdf
    • https://uploads.strikinglycdn.com/files/b7f3951b-ede2-457d-9508-258994dd605c/sails_library_network_lakeville_ma.pdf
    • https://uploads.strikinglycdn.com/files/c4691c97-5e1a-45f9-9d13-882391589034/48208232644.pdf
    • https://uploads.strikinglycdn.com/files/a8d5346d-f6be-44a1-a0fd-4be20c16406b/52810123862.pdf
    • https://s3.amazonaws.com/widuxade/antivirus_terbaik_untuk_hp_samsung_android.pdf
    • https://uploads.strikinglycdn.com/files/e3bd8288-9525-4e4b-9b2d-6ccccf43a3b9/vexatox.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_off0000b883.bin
6366c5a05e5283db2af0372cac6e1e9d8326b285228926387ef47986efa50c99		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB883 5220 bytes
font_01_sfnt_off0000ca0c.bin
37026e847098bddc1bcb77938080eb6f9d6ceaac2ec476c3dc4c5eea944e5a9e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCA0C 10736 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.