Malicious PDF — malware analysis report

Static analysis result for SHA-256 369b2c4902a54402…

MALICIOUS

PDF

96.7 KB Created: 2021-04-22 10:41:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 2f303e9ec8c6ca219385500250c4a1e8 SHA-1: 78dff5ca03589fa1461435c0b43844e28256a7f9 SHA-256: 369b2c4902a544028b0a0b9cc8bd84f4a4d3f4b2b548ecedbd7c05d462a58f0a
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable domains, indicating a link farm designed to redirect users to potentially malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and URL patterns are indicative of a common phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

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://gimoguvi.ru/strik?utm_term=the+culture+code+book PDF link annotation
    • http://roxifij.22web.org/convert_kindle_azw_to.pdfIn PDF document text
    • http://wameduxuka.iblogger.org/dapodofomag.pdfIn PDF document text
    • http://robot3.site/is_cyberpunk_good_on_ps4_pro7ffjm.pdfIn PDF document text
    • http://salea.site/the_island_of_dr._moreau_1977_ok.ru3nlfk.pdfIn PDF document text
    • http://goldstein.capital/661921592138vgbp.pdfIn PDF document text
    • http://melomone.scienceontheweb.net/cds_ota_english_syllabus.pdfIn PDF document text
    • http://tebogekememesij.mygamesonline.org/52575612256.pdfIn PDF document text
    • http://zuxemesemubozo.mywebcommunity.org/97033015319.pdfIn PDF document text
    • http://xojuxegalixiluj.66ghz.com/digital_payment_system.pdfIn PDF document text
    • http://erkutungotu.com/chelsea_stadium_seating_guidei6265.pdfIn PDF document text
    • http://jamotovoxut.mywebcommunity.org/kotosakixemebozajexe.pdfIn PDF document text
    • http://smm-target.ru/47646736134b1i9j.pdfIn PDF document text
    • http://sagedix.medianewsonline.com/21388929239.pdfIn PDF document text
    • http://fipagolanikobax.mygamesonline.org/89618605949.pdfIn PDF document text
    • http://mekomob.getenjoyment.net/sap_bpc_training.pdfIn PDF document text
    • http://zujejilolo.scienceontheweb.net/ribidibosexus.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://jebejabekuja.epizy.com/fidabi.pdfIn PDF document text
    • http://fokibofu.epizy.com/mefitotuvanularura.pdfIn PDF document text
    • https://ab9101c8-a046-40a0-ba79-761bab9f3367.filesusr.com/ugd/61fb7c_42fd4aef07a14e22a15f94bdeb38b1ea.pdf?index=trueIn PDF document text
    • https://32e47638-7206-44c1-ad53-5c6f9176402e.filesusr.com/ugd/e00742_08dc61f168674d38867514de0cba49b1.pdf?index=trueIn PDF document text
    • http://pawuzax.onlinewebshop.net/fexut.pdfIn PDF document text
    • http://rulamiji.onlinewebshop.net/card_college_light_review.pdfIn PDF document text
    • https://933afb0c-60ca-4ff4-ba38-e7c804ca925d.filesusr.com/ugd/941881_3716f66ae9e44fd1bcddfdcf3c0f1074.pdf?index=trueIn PDF document text
    • http://fanalejowegop.atwebpages.com/classroom_action_research_sample.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_off00012f3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F3F 4520 bytes
SHA-256: 186723974cf2fef77df215326ca90f9b67007f6f5066331021a637c953fc1071
font_01_sfnt_off00013eaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13EAA 12008 bytes
SHA-256: 1f7a76b6e29920a188bba4a4aa5ad32af6a198108f8573af1c57c03de11e383b
font_02_sfnt_off0001672a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1672A 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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