Malicious PDF — malware analysis report

Static analysis result for SHA-256 667e82ea2dd72e74…

MALICIOUS

PDF

99.4 KB Created: 2021-04-09 01:57:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 8d7a7bbfbb3d8d51e08f517f6699898c SHA-1: 5cba6c906aad851acc2212d7a122a47b1af49284 SHA-256: 667e82ea2dd72e74efac16d04e5558b58bb2d9447acbad0af6df68230704b3d3
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to disposable domains and are likely part of a link farm designed to redirect users. The primary URL, 'https://lozipotod.ru/strik?utm_term=what+type+of+music+is+permissible+in+islam', suggests a phishing or malicious redirection attempt disguised as a search result. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9937

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://lozipotod.ru/strik?utm_term=what+type+of+music+is+permissible+in+islam PDF link annotation
    • https://cdn.sqhk.co/livukigelo/ggbvih5/44080764743.pdfIn PDF document text
    • https://cdn.sqhk.co/benibavagoge/dmjhhgA/54172543694.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493597/normal_606e52ee4edca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392862/normal_601b7b1c69f66.pdfIn PDF document text
    • http://gumasuk.iblogger.org/80674442257.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403428/normal_5ff765a9dabdc.pdfIn PDF document text
    • https://cdn.sqhk.co/wowebajix/ghidwja/hydrochloric_acid_salt_formed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494657/normal_5fea1c2e5e067.pdfIn PDF document text
    • https://cdn.sqhk.co/zifeduwa/ijiaXsr/puvozupoguluji.pdfIn PDF document text
    • https://cdn.sqhk.co/zuxatotukaru/Qge17Cu/39295750875.pdfIn PDF document text
    • http://tefitagesev.mypressonline.com/narofaliwajenuvaves.pdfIn PDF document text
    • https://cdn.sqhk.co/xusarukave/jgT6iaG/the_bonfire_forsaken_lands_cheat_engine.pdfIn PDF document text
    • http://kotebebe.iblogger.org/bovudoxiwokuzupokabaf.pdfIn PDF document text
    • https://cdn.sqhk.co/jinuzekovodi/hNicCje/best_80s_rock_music_playlist.pdfIn PDF document text
    • http://vizilirudigub.getenjoyment.net/disposal_of_hazardous_waste.pdfIn PDF document text
    • https://cdn.sqhk.co/kasuwune/gjVgcHs/rapunzel_disneybound_dress.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490364/normal_601c69e969008.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gateme/58940598990.pdfIn PDF document text
    • http://zaduzos.myartsonline.com/zodozomebujatirijuret.pdfIn PDF document text
    • https://s3.amazonaws.com/jitimesolagun/79409471484.pdfIn PDF document text
    • http://fikenojidukozo.rf.gd/auditoria_forense_en_mexico.pdfIn PDF document text
    • https://s3.amazonaws.com/tanikanaw/35964450366.pdfIn PDF document text
    • http://farovosodiwes.atwebpages.com/university_of_washington_seattle_campus_map.pdfIn PDF document text
    • http://zavivemigowoson.epizy.com/my_name_cake_pic.pdfIn PDF document text
    • https://s3.amazonaws.com/najubu/celestron_astromaster_114eq_review.pdfIn PDF document text
    • http://pojoviraxerojo.myartsonline.com/23098760421.pdfIn PDF document text
    • https://s3.amazonaws.com/wemofodi/the_sales_bible_audiobook_free.pdfIn PDF document text
    • http://wupofopevina.epizy.com/deduxozi.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00014cd6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x14CD6 27652 bytes
SHA-256: c4b1abc8b4bc4e5b938e9526c5715cd6ac0c2668fb5bb17192e5d07e74cf3a55
font_00_sfnt_off00011540.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11540 5508 bytes
SHA-256: 24d0cfd4a1bf545ae2570043e968cfe1e20a91313f63f3f0fba9944f7c201a9b
font_01_sfnt_off000127e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127E3 10840 bytes
SHA-256: 9c90ceae4fc11c320bda22b644df233cde7dadd58df2a0fea865a37bdaabcdde