Malicious PDF — malware analysis report

Static analysis result for SHA-256 bea0205bd314d6f5…

MALICIOUS

PDF

74.6 KB Created: 2021-04-23 14:11:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: f9d5026336c3814cd9a2f8a5f6f9fc26 SHA-1: f598fbec63adb9a22a3fb05cf056c0ef96194318 SHA-256: bea0205bd314d6f5e7131f2f1ead868efe26e274e5a2bd856cfa41f798626716
134 Risk Score

Malware Insights

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

The PDF contains numerous external URIs, many hosted on disposable domains, indicating a link farm designed to trick users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards an attempt to redirect users to malicious sites, potentially for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://nipisod.ru/strik?utm_term=losin%2527+it+%25281983%2529+full+movie+download+in+hindi PDF link annotation
    • http://gujozulogisin.scienceontheweb.net/endodontic_retreatment.pdfIn PDF document text
    • http://misitaka.iblogger.org/sazoj.pdfIn PDF document text
    • https://cdn.sqhk.co/vesagivara/jiegdid/pevibowotirifen.pdfIn PDF document text
    • http://nufudoze.getenjoyment.net/vesofax.pdfIn PDF document text
    • http://miwewumexurigan.sportsontheweb.net/giraffes_cant_dance_lesson_plan_growth_mindset.pdfIn PDF document text
    • http://ritefajitexu.scienceontheweb.net/examens_regionaux_la_boite_a_merveilles.pdfIn PDF document text
    • http://xuxetosufuzo.getenjoyment.net/pawowefevojobojefiluk.pdfIn PDF document text
    • http://vofufime.mypressonline.com/85471747970.pdfIn PDF document text
    • http://datovufes.scienceontheweb.net/campbell_biology_9th_edition_online.pdfIn PDF document text
    • https://cdn.sqhk.co/xesozugis/jgJjbha/fish_restaurant_liverpool_ny.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sopavame.onlinewebshop.net/kusapitexananodinopar.pdfIn PDF document text
    • https://b585a76b-fab5-4024-b0d2-f3ad95444197.filesusr.com/ugd/404203_e8b166c2f75446ff860a197ffd985e0f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kavugusepe/how_do_you_convert_a_micro_sim_to_a_nano_sim.pdfIn PDF document text
    • http://kenesowozowojaw.myartsonline.com/beginner_christmas_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/gopuze/56215373387.pdfIn PDF document text
    • https://3ff4c494-4984-418a-b709-7a5c611cca0a.filesusr.com/ugd/adbee0_fc708be4496d428f859fb4482f93e5de.pdf?index=trueIn PDF document text
    • https://4ac36a2f-1533-488b-b282-cf34cdace458.filesusr.com/ugd/bcfc12_dc53588f3f1b49f7ae31b46c8e9292e0.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lekezaru/band_of_brothers_subtitles_free.pdfIn PDF document text
    • https://fea67d75-dd3b-4bdd-af05-748e92ec8a52.filesusr.com/ugd/05900a_a7cd364c85a548a1869a7cae53e4bd77.pdf?index=trueIn PDF document text
    • http://texaliborobiko.epizy.com/bls_guidelines_choking.pdfIn PDF document text
    • http://perexuwofogefo.onlinewebshop.net/nalipabilusakilofuvigozak.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e451.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE451 5900 bytes
SHA-256: 985b69cde45cdf553594616099e5eaa71dea672d84f4d7c10ceb70e55bc0fa9e
font_01_sfnt_off0000f874.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF874 10584 bytes
SHA-256: 0b0395e09ed1b7ca4a45d37b850739fc3e57a8ce61157932e661dc6fe303c6e9

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