Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e8334e28e7bdbcd…

MALICIOUS

PDF

85.7 KB Created: 2021-04-03 12:02:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 2815dfc4e7674a4b0ca74eebf0377728 SHA-1: cef3c9dcce89ca0e604e2ad7d76b81db38485955 SHA-256: 6e8334e28e7bdbcd3510da3d1f1be503b863a95aed0df3d6e5edf3c29a786f2c
126 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains numerous embedded URLs pointing to disposable domains and link farms, suggesting an attempt to redirect users to malicious content. The PDF structure and embedded URIs indicate it's designed to exploit users through deceptive links, likely as part of a phishing campaign or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://bologen.ru/wix?keyword=religious+symbols+in+brave+new+world PDF link annotation
    • https://cdn.sqhk.co/pixafosabow/dgcifgi/flix_movies_mod_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489422/normal_5fdefb75d1645.pdfIn PDF document text
    • https://cdn.sqhk.co/fodexuxefeba/5ftiaGm/recipe_for_glaze_icing_for_pound_cake.pdfIn PDF document text
    • http://videohost.space/238611474926vepb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404503/normal_5fe44db4e51dd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374852/normal_5ffa12db5c0f5.pdfIn PDF document text
    • http://kleomaften.online/pafonizexuwezafulewr2776.pdfIn PDF document text
    • https://cdn.sqhk.co/gewanunu/hfLhjCB/hide_and_seek_online_game_y8.pdfIn PDF document text
    • http://mandarins.space/commercial_invoice_template_euroe2nt9.pdfIn PDF document text
    • http://kavelux.22web.org/sinulikaxogux.pdfIn PDF document text
    • http://lusoxokurutugap.22web.org/zovilexodigom.pdfIn PDF document text
    • https://cdn.sqhk.co/kapokosop/wgRjaAs/online_dictionary_spanish_to_english_free_translation.pdfIn PDF document text
    • https://cdn.sqhk.co/libuzewis/jfiaXgc/koxeguzifabajetapuzur.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379723/normal_5ffe5322cf8a8.pdfIn PDF document text
    • http://jinokonur.22web.org/knee_joint_examination.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391001/normal_5fef6166acab1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391624/normal_6038009839b52.pdfIn PDF document text
    • https://cdn.sqhk.co/revinoxu/cJazEjb/66179506798.pdfIn PDF document text
    • http://wssummer.space/xobugiradibaguzimezpp6h9.pdfIn PDF document text
    • https://cdn.sqhk.co/zarepowake/kie9ghx/28082988486.pdfIn PDF document text
    • http://richmaya.site/cuando_empieza_el_otoo_en_californiahpqa7.pdfIn PDF document text
    • https://cdn.sqhk.co/belerudoxej/4jgihbs/64651320440.pdfIn PDF document text
    • https://cdn.sqhk.co/fefowofuk/dFGjcif/farm_frenzy_inc_mod_apk_revdl.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447877/normal_5fec46723d0bb.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://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_off0001019d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1019D 5348 bytes
SHA-256: aaf36f8943ec8762d8dc492215f99c1f62754322570b288df3f70343f2db9ae9
font_01_sfnt_off000113be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113BE 11748 bytes
SHA-256: 15d345faf651714e117936852bfa28b4a26765674e49088a64e808423279e4b7
font_02_sfnt_off00013aa2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13AA2 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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