Malicious PDF — malware analysis report

Static analysis result for SHA-256 600de479ca6758a9…

MALICIOUS

PDF

75.6 KB Created: 2021-03-15 01:49:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 9a84d3295270d3f31d50ad224122e6e5 SHA-1: a4001e13a2ec867e8e720c2641f8f67e0efadbd5 SHA-256: 600de479ca6758a9114800da411e27ca29f2e66acecdc90aa3489576062571c7
194 Risk Score

Malware Insights

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

This PDF document was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm designed to obscure the ultimate malicious destination. The primary malicious URL identified is https://lozipotod.ru/strik, which is likely part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • 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 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.
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://lozipotod.ru/strik?utm_term=how+to+change+voicemail+message+on+inter+tel+phone PDF link annotation
    • http://fekevopimibun.sportsontheweb.net/used_stihl_fs_130_for_sale.pdfIn PDF document text
    • http://kopogaxepaku.sportsontheweb.net/71599307503.pdfIn PDF document text
    • http://rowowevu.mypressonline.com/xolorelenonotasatoseposa.pdfIn PDF document text
    • http://lazirog.mywebcommunity.org/77063363896.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://748f1d53-d141-46c1-926a-d14fc69713a3.filesusr.com/ugd/e3ed1f_83868d2487cd4ce2877770eaf6112368.pdf?index=trueIn PDF document text
    • https://34e51215-b586-4e01-b3ea-a219475a7b91.filesusr.com/ugd/46481b_0f6e93c27937471fb6a4674ae3e05bed.pdf?index=trueIn PDF document text
    • https://3dcfbd4a-ef33-49dc-a04a-0aaf5307c30d.filesusr.com/ugd/b47706_41d0ef86b5a64418ba6acad777088224.pdf?index=trueIn PDF document text
    • https://d5bea983-5bca-41ba-aae6-6b688785cc77.filesusr.com/ugd/9ec29b_cc6111c6711840d4975bafebc5408ccb.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/feborobegibew/hadoop_the_definitive_guide_4.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28eb253c-95d5-4760-b11f-31f22054935f/luvategezulirij.pdfIn PDF document text
    • https://s3.amazonaws.com/kovezodepugov/bit_torent._com_free_for_windows_xp.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0805d498-2cf7-4d4d-bca3-5d2baabeb5c6/the_knife_of_never_letting_go.pdfIn PDF document text
    • https://1618b3f4-dcc0-4047-a816-eeb1cbe43c51.filesusr.com/ugd/a01749_9b6f06f232a844819003bb084e402e72.pdf?index=trueIn PDF document text
    • https://65de77fc-0341-4fd2-89b2-cd6b005a91de.filesusr.com/ugd/cf79db_33b16ef27b8d4d6588ebe4d53688e1a2.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c39756d-31f9-4876-a467-1676881f232b/30489464765.pdfIn PDF document text
    • https://aed022ca-8a9d-452d-9022-56a74a585a14.filesusr.com/ugd/4d548e_1182b193f19647bfa95cdff17306e523.pdf?index=trueIn PDF document text
    • http://zuvuzevo.atwebpages.com/english_vowel_and_consonant_sounds.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3d4df44-5845-4fd2-a7a5-4dabdac1d6d6/api_570_piping_inspection_code.pdfIn PDF document text
    • https://931f52e6-cb68-4a93-8e02-54808d33f8b6.filesusr.com/ugd/6290de_520268d6a347404da56c0d8c639b80c9.pdf?index=trueIn PDF document text
    • https://f621ecf8-e26c-4db3-9bdf-176eeceb312d.filesusr.com/ugd/b3755e_3dd19702f9d84547a6b46eb94b7ef1bc.pdf?index=trueIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dbef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBEF 5248 bytes
SHA-256: 6035e6e5fb2b0411d02b4648ca7684a2c60ef1046152330cf7eae30d39c6924b
font_01_sfnt_off0000eda9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDA9 10888 bytes
SHA-256: 8c7873cd735a36b7411d7bfd7217349be514528765de7acbb94f1b0ce0a80088
font_02_sfnt_off00011284.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11284 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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