Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e0a2377c4d47856…

MALICIOUS

PDF

83.2 KB Created: 2021-03-21 22:09:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 3c298ad39a39c1ebed6a38c8517d829c SHA-1: bc5bd9449136ab795db3281bc791182323eaccdd SHA-256: 2e0a2377c4d478568bab8c94c4cefce0dee46de6bec48c317f9ee26a3159ea1b
186 Risk Score

Malware Insights

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

This PDF document was flagged by multiple heuristics and a machine learning classifier as malicious, specifically identified as a phishing trojan. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or a distribution point for further malicious content. While no scripts were explicitly extracted, the PDF structure and link farm behavior are indicative of techniques used to redirect users to malicious sites or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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.
  • 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://maypoin.ru/award?keyword=what+is+the+anointing+of+god+pdf PDF link annotation
    • https://cdn.sqhk.co/jugemito/syijaqr/shogun_2_sea_battle_tips.pdfIn PDF document text
    • https://dojapoxozali.weebly.com/uploads/1/3/0/7/130775013/8273648.pdfIn PDF document text
    • https://cdn.sqhk.co/fotenulutis/gd1I15h/47641122545.pdfIn PDF document text
    • https://xadafujivesa.weebly.com/uploads/1/3/1/3/131397927/sivebabubiz_jipegozimulak.pdfIn PDF document text
    • https://ganoworot.weebly.com/uploads/1/3/4/2/134236177/nodurotix-povisalawu-gajasafexix-kesirutojimepax.pdfIn PDF document text
    • https://titepusigob.weebly.com/uploads/1/3/5/3/135392267/a20f8c25c32.pdfIn PDF document text
    • https://cdn.sqhk.co/wifopuzuxiba/figGgiv/namujonanimarujedibu.pdfIn PDF document text
    • https://cdn.sqhk.co/regisanozoxo/W5VKhgT/patexisugatapojom.pdfIn PDF document text
    • https://cdn.sqhk.co/tonatozi/figheic/friday_the_13th_jason_lives_parents_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/jabezoxujo/elp6Hhd/european_wars_2_mod_apk_download.pdfIn PDF document text
    • https://fuselenedirila.weebly.com/uploads/1/3/4/5/134597682/feram_gutobam_jefojibir_laxususakopefi.pdfIn PDF document text
    • http://matawobedopikam.mywebcommunity.org/alfabeto_coreano_espaol.pdfIn PDF document text
    • https://cdn.sqhk.co/zipedufipiz/UKsjgNO/castlestorm_free_to_siege_mod.pdfIn PDF document text
    • https://tuzutetenufiro.weebly.com/uploads/1/3/4/7/134716615/3548716.pdfIn PDF document text
    • https://gejowarog.weebly.com/uploads/1/3/2/7/132740172/54d6cf409a9f9af.pdfIn PDF document text
    • https://cdn.sqhk.co/melipetoluf/ojjiblc/morehead_city_powerboat_race.pdfIn PDF document text
    • https://cdn.sqhk.co/zafupusapun/XBjf6ZQ/ruziletiruvubeb.pdfIn PDF document text
    • https://taxajoberaruvu.weebly.com/uploads/1/3/4/3/134320235/dunenukosapuwev_dukuveduxodup.pdfIn PDF document text
    • https://cdn.sqhk.co/tuxarulenogu/c9y6NqI/58915990168.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
    • http://gipebevu.atwebpages.com/scribus_user_guide.pdfIn PDF document text
    • http://fuvamawijivef.atwebpages.com/wasobafugafujudij.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f796.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF796 4976 bytes
SHA-256: a1a8487fed5e95fab57e1e8ead2ce095c25b1f7b49ac80d4ba08ec3537906772
font_01_sfnt_off0001088c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1088C 11520 bytes
SHA-256: e08f8c0a0ec20aed6bbc0b95e9852f948df79b5b66ee93b5f86b960c9b8b29cd
font_02_sfnt_off00012f3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F3E 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361