Malicious PDF — malware analysis report

Static analysis result for SHA-256 eddd40568e033fa0…

MALICIOUS

PDF

86.7 KB Created: 2021-02-26 11:32:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 98841354107a923f0ea2d5afd46aa2d1 SHA-1: 36d09b0c546294aab5d245f3ed773cf90f943631 SHA-256: eddd40568e033fa0a9952859896a3ca5d79adb6eb41e3fa614331028ba1db6c8
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains a significant number of external links, many hosted on disposable domains, suggesting it functions as a link farm for SEO manipulation. One of the primary URLs, 'https://soxebez.ru/strik?utm_term=campark+trail+camera+app', is likely used to redirect users to malicious content or phishing pages. The presence of PDF-specific heuristics like 'PDF_SEO_LINK_FARM' and 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly supports this attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://soxebez.ru/strik?utm_term=campark+trail+camera+app PDF link annotation
    • https://cdn.sqhk.co/naxisedomak/IgcKib1/zombie_hunter_survival_knife.pdfIn PDF document text
    • https://cdn.sqhk.co/lirebirab/gfLX8br/vatodixopazajufazes.pdfIn PDF document text
    • http://powerpoint4you.ru/vulegexaguwuliah2.pdfIn PDF document text
    • http://jedomagisuw.getenjoyment.net/monthly_safety_topics_2020.pdfIn PDF document text
    • http://copyrightreports.com/como_ganar_amigos_e_influir_sobre_las_personas_resumen_cortol60g9.pdfIn PDF document text
    • https://kejobogufepemis.weebly.com/uploads/1/3/0/7/130775396/fewatu-jezimumexini-vonolupeni-zufux.pdfIn PDF document text
    • http://cafe-cok.ru/how_to_get_abs_for_guys_in_2_weeksk701b.pdfIn PDF document text
    • https://cdn.sqhk.co/zetanitanedo/elmicge/mewikakuvepunaramalije.pdfIn PDF document text
    • https://cdn.sqhk.co/rapovixovuti/hfieihq/69435565667.pdfIn PDF document text
    • https://jikabokuw.weebly.com/uploads/1/3/4/6/134658058/dfff3b4ded2dc5f.pdfIn PDF document text
    • http://rigoditibalun.mywebcommunity.org/69389342154.pdfIn PDF document text
    • http://vannabanyavsedela.xyz/57551313115rtd1r.pdfIn PDF document text
    • http://grusha.space/xefibut1bmh.pdfIn PDF document text
    • http://woxagaxizi.22web.org/wifulejiwazevalo.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://ziwemasux.myartsonline.com/rewejoxejen.pdfIn PDF document text
    • https://s3.amazonaws.com/dofufiri/breakdown_full_movie.pdfIn PDF document text
    • http://lobopekogolo.onlinewebshop.net/parrot_ck3100_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/nedijowewoded/plastic_deformation_by_twinning.pdfIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/kaplan_vs_princeton_review_mcat_prep_books.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE1B 2960 bytes
SHA-256: a4eee3438a7246650f0a21218a9bc29d7bc7bf1b287bce9df301f714692068dd
font_01_sfnt_off0000e89f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE89F 4560 bytes
SHA-256: 58fb4b9053dd8a399b17182e1f086b3fa7056e10edbc1ae0495699c692c70407
font_02_sfnt_off0000f816.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF816 2188 bytes
SHA-256: baf84bdf40ca5391d7c84897fcec49e6a2e6fd28b01aafad1d14413831111027
font_03_sfnt_off0001021f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1021F 11328 bytes
SHA-256: 90968f3079156a985edde21f6ae835497b1cfef329837343a2636540f9b5b62e
font_04_sfnt_off00012910.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12910 16092 bytes
SHA-256: 2ae54feca48abd86b01633827f328d6d7359f632e73dcb89532a8de68b0e710f
font_05_sfnt_off00013dce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13DCE 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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