Malicious PDF — malware analysis report

Static analysis result for SHA-256 01f6d8ece8bc5a36…

MALICIOUS

PDF

74.6 KB Created: 2021-02-28 20:18:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aec3629457744927af1555bc6dd89feb SHA-1: 5a5a6368a81d3fc40a488c893d0abac459b2aa7a SHA-256: 01f6d8ece8bc5a360b8cf8f6a354794da1ab80f42b95748ec9f2232467a72e2c
156 Risk Score

Malware Insights

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

The PDF document contains numerous external links, a common tactic for phishing or scam operations. The document body, though heavily obfuscated, suggests a lure related to building a moonshine still. The presence of a PDF link farm heuristic and ClamAV detection further supports its malicious nature. No scripts were extracted, but the document's structure and embedded URLs indicate it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://soxebez.ru/123?utm_term=how+to+build+a+moonshine+still+step+by+step
    • https://cdn.sqhk.co/gafisasiwu/hggLPhb/cruise_critic_reviews_celebrity_edge.pdf
    • https://static.s123-cdn-static.com/uploads/4374175/normal_5fcef47389547.pdf
    • https://sufudoni.weebly.com/uploads/1/3/4/8/134853368/sijar.pdf
    • https://cdn.sqhk.co/toxodimina/aiawhed/facsimile_transmission_medical_definition.pdf
    • https://cdn-cms.f-static.net/uploads/4413978/normal_60212cd9ac7b6.pdf
    • https://static.s123-cdn-static.com/uploads/4367642/normal_5fccc6c1165f9.pdf
    • https://cdn.sqhk.co/jigitovewuk/Mu4yVii/bored_button_games.pdf
    • https://cdn.sqhk.co/segisaxa/nnjgghV/valopawagokiwugi.pdf
    • https://static.s123-cdn-static.com/uploads/4446147/normal_5fef44990dcd4.pdf
    • https://cdn.sqhk.co/tuzevawu/v8haghf/ninja_blender_sale_australia.pdf
    • https://gozezitigaja.weebly.com/uploads/1/3/4/3/134340412/ebe09f7ed5c62d7.pdf
    • https://cdn-cms.f-static.net/uploads/4386365/normal_60373dba22ac7.pdf
    • https://cdn.sqhk.co/fovudadeweto/jg3ghbD/67420291007.pdf
    • https://cdn.sqhk.co/vowibesep/aH0jjEg/karta_incognito_safari_mac.pdf
    • https://cdn-cms.f-static.net/uploads/4414701/normal_6035146905e80.pdf
    • https://cdn.sqhk.co/jiliroba/7RidhgH/ligewi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/tapelu/vimexoredosanovipev.pdf
    • https://s3.amazonaws.com/kefiperizonofu/65831579408.pdf
    • https://s3.amazonaws.com/kujesulad/dream_theater_octavarium_full_album.pdf
    • https://s3.amazonaws.com/mejifavo/virology_mcq_with_answers.pdf
    • https://s3.amazonaws.com/goveruduzewoxu/9889876514.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_off0000e71e.bin
35198352517530c2bf9a8184bad68d761fd3b0ad60c8e5966c06c8c5a1db409a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE71E 5400 bytes
font_01_sfnt_off0000f963.bin
f8d69ca679507ccac51d9bcf818c160276fec4def3650e45f77e759d08164946		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF963 10324 bytes

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