Malicious PDF — malware analysis report

Static analysis result for SHA-256 eade8c54553843d4…

MALICIOUS

PDF

76.1 KB Created: 2021-04-02 00:29:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: de98323fd46dd1707c39ae050c30f41d SHA-1: 28b14c3663e3652a96b64ad58dee01a024cbac48 SHA-256: eade8c54553843d45935743abd4b9e2b0066518907ad66f5121420cdb6ecbca9
126 Risk Score

Malware Insights

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

This PDF file is classified as malicious, exhibiting characteristics of a phishing or link-farming operation. It contains numerous embedded URLs, with a primary external URI pointing to 'https://resalured.ru/wix?keyword=1+timothy+questions+and+answers+pdf', suggesting a lure to a malicious site disguised as a search result. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' further indicates a pattern of using disposable hosting for link aggregation, reinforcing the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://resalured.ru/wix?keyword=1+timothy+questions+and+answers+pdf
    • https://ruworelolovifuf.weebly.com/uploads/1/3/4/4/134462917/ragozesatazaze.pdf
    • https://static.s123-cdn-static.com/uploads/4406812/normal_5fcdb459ce8ef.pdf
    • https://static.s123-cdn-static.com/uploads/4367680/normal_5fca33da76516.pdf
    • https://cdn-cms.f-static.net/uploads/4369766/normal_605594c47d917.pdf
    • https://govexofube.weebly.com/uploads/1/3/1/8/131872198/cf484159f730ef4.pdf
    • http://rapiwanijisage.scienceontheweb.net/lurujum.pdf
    • https://cdn-cms.f-static.net/uploads/4375521/normal_605aa87817b2a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://kenesowozowojaw.myartsonline.com/bmw_x5_e70_wiring_diagram.pdf
    • http://vawofirulev.myartsonline.com/afrasia_bank_south_africa_wealth_report_2020.pdf
    • https://uploads.strikinglycdn.com/files/9ef3d38d-5673-43ec-bf0b-e724fd284d71/ejemplo_de_un_proyecto_de_planificacin_estratgica.pdf
    • https://uploads.strikinglycdn.com/files/d4b30978-bde6-4df4-b8f3-8bcd6fdd5f5c/jigaguwas.pdf
    • http://lijukogibedatu.epizy.com/hp_color_laserjet_5550_printer_cartridges.pdf
    • http://ravesezubepad.epizy.com/71776253131.pdf
    • http://posugez.epizy.com/diterojolabu.pdf
    • http://jipobemimojogot.rf.gd/adblock_plus_per_opera.pdf
    • http://torumaxot.rf.gd/always_on_display_samsung_a10_apk.pdf
    • http://nekaluro.rf.gd/tizupejipuzo.pdf
    • http://fajenadiwizowo.atwebpages.com/adrenal_gland_tumors.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea93.bin
ed0279434d5c77a07552595e50210d39cb41887129a86d6a2926cb2224af8fc9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA93 5524 bytes
font_01_sfnt_off0000fd49.bin
a517a0235d15f02ebce69c8f7f887ad8922d1d153a77b0662544e037351b5a79		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD49 10748 bytes

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