Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed6fcb66d2c32b90…

MALICIOUS

PDF

93.1 KB Created: 2021-04-02 17:12:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9372d0689a5d5c2a6b88e48b8acbd5ba SHA-1: 1421897c09beeeffe5c8f8a4f2ce5720b713bbdf SHA-256: ed6fcb66d2c32b90f5db9013b8b97a77c5c83117c1888ed404a8500859e9e082
134 Risk Score

Malware Insights

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

The PDF contains multiple external URIs and is flagged as a link farm on disposable hosting, indicating a phishing or malicious redirection attempt. The presence of urgency language further supports this. Although no scripts were explicitly extracted, the PDF structure and heuristic firings suggest it is designed to lead the user to malicious content hosted at URLs like https://xezojetit.ru/123?utm_term=abp+majha+marathi+news+channel.

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 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://xezojetit.ru/123?utm_term=abp+majha+marathi+news+channel
    • https://cdn-cms.f-static.net/uploads/4394062/normal_5fda4aeba7c8b.pdf
    • https://cdn.sqhk.co/xexerekija/jgqTkqr/horizon_credit_union_ponderay_idaho.pdf
    • http://pafiwuz.66ghz.com/80475582614.pdf
    • http://tupakewufitid.iblogger.org/film_bang_bang_subtitle_indonesia_mp4.pdf
    • http://goxadonivibifiw.22web.org/how_to_fail_at_almost_everything_and_still_win_big_goodreads.pdf
    • https://cdn.sqhk.co/pepitaji/ifhdZhe/83593066433.pdf
    • http://kavuxusexilu.22web.org/fawekiwiziweforuromosumuk.pdf
    • http://lijasojaxivura.22web.org/69373419539.pdf
    • https://cdn.sqhk.co/fodexuxefeba/ehjJhaj/copious_dogs_mod_minecraft_1._12_2.pdf
    • https://cdn.sqhk.co/luketopaja/g3UMwSj/html_number_format_money.pdf
    • https://cdn-cms.f-static.net/uploads/4407807/normal_5fdc9182d13fc.pdf
    • https://cdn.sqhk.co/dutedape/eiihh77/giguponuruf.pdf
    • https://static.s123-cdn-static.com/uploads/4415321/normal_5fc58c315c853.pdf
    • https://cdn-cms.f-static.net/uploads/4385859/normal_6042cb3ed9f38.pdf
    • https://cdn.sqhk.co/zupodejadofe/ahShghg/45745749801.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • http://tinipukax.epizy.com/ielts_listening_answer_sheet_2018.pdf
    • http://fafiwokewe.epizy.com/build_your_own_wood_splitter_kit.pdf
    • http://rufevobovejexe.rf.gd/tuvezivuzodefejeko.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000103ab.bin
340342c8730564f960e879d0dad36a3c3ef623c16baea98a94a52edc3a74dcc6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x103AB 5468 bytes
font_01_sfnt_off00011628.bin
d4fa6a67ef75e642abce440a108bb5827486d9530816ca1b813a0580431f1eae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11628 11292 bytes
font_02_sfnt_off00013d26.bin
6e3fbd491d8b71441998836ddca0d0c102716a221ea14f8143929167ad9a79b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13D26 16164 bytes
font_03_sfnt_off00015277.bin
3e02ad9ca517157ed51c484da4eb98145b1f897f86553dfe0e39c1269c76f112		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15277 6040 bytes

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