Malicious PDF — malware analysis report

Static analysis result for SHA-256 6089f980148b1c2d…

MALICIOUS

PDF

86.9 KB Created: 2021-03-17 04:30:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e3f5bdb4831fca71060095fad93080ab SHA-1: a28a03171c8b9f551e111cc705e0eea974358e0a SHA-256: 6089f980148b1c2de43e3752b07c3ee40264a4318d0a353eda82b2022cd76d91
126 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely used to host malicious content or redirect users to a phishing site. The PDF's structure and embedded content suggest it's part of a social engineering campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://jumiwimov.ru/123?utm_term=dragonite+counter+guide
    • https://cdn.sqhk.co/vodadavubex/lb4jgaB/vuvutujanimajofixuga.pdf
    • https://cdn-cms.f-static.net/uploads/4444366/normal_60254fb98bd85.pdf
    • https://cdn-cms.f-static.net/uploads/4467019/normal_604d339a15a8d.pdf
    • https://cdn.sqhk.co/repipedifavi/gh6manS/49361645803.pdf
    • http://xudogiborijum.66ghz.com/tabuvebibor.pdf
    • http://pirewixuzejetin.iblogger.org/spotify_premium_mod_android.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/loranoduzuja/apeman_trail_camera_instruction_manual.pdf
    • https://a3de454e-1598-42bb-a259-4eb69c42f179.filesusr.com/ugd/fb5067_0a42bb1c0e044e9a8c888c062218f64c.pdf?index=true
    • http://redebalumu.rf.gd/73423982130.pdf
    • https://uploads.strikinglycdn.com/files/e152006a-98d8-499d-a1a0-67494f4d3cf0/what_is_sales_example.pdf
    • http://rawuvotatu.rf.gd/inside_reporting_tim_harrower_online_free.pdf
    • https://s3.amazonaws.com/legobegutulo/90942008503.pdf
    • https://4a39c6c9-989b-4d11-b2d8-cc0becc7f193.filesusr.com/ugd/ef0078_f6e6e3cd03c94cb7a10b79705309a865.pdf?index=true
    • https://uploads.strikinglycdn.com/files/e7c46ecd-bf69-4f69-ae8d-63f73b8c5549/nunotalisoluzaginosirux.pdf
    • https://uploads.strikinglycdn.com/files/880b0f8a-ecbf-4926-94c1-46fe684eaf68/graco_magnum_prox7_parts.pdf
    • https://0fc0baf9-b884-4fcd-968e-f93c0f938930.filesusr.com/ugd/68ec51_25b06dbbdaa24d56bd94a8fe57ae56f2.pdf?index=true
    • https://s3.amazonaws.com/gawabog/geometric_sequences_worksheet_answer_key_kuta_software.pdf
    • https://uploads.strikinglycdn.com/files/5102355f-33a0-4e5f-89b2-136ca316ad51/53043809830.pdf
    • http://gopudagob.epizy.com/sivapedo.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_off00011406.bin
0827a551120185945bcdaec96c9f0b54314f42a21b18b138a6dc6764e8ee8e2c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11406 4896 bytes
font_01_sfnt_off000124c0.bin
f6a190a10f1340ee6c52655f277d7e1f09b1ba523d9b40780ddcc05da075fff1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x124C0 12228 bytes

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