Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2dd7cc008c7461a…

MALICIOUS

PDF

73.5 KB Created: 2021-03-21 02:09:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 281a140f37587ba87e0d8b141fc6558d SHA-1: c9a1451b42e93c608e425249df8f2ca234a062d0 SHA-256: f2dd7cc008c7461a0d61f423a536aae4c3f98a2107bfb89e97f86d71c31b09e7
126 Risk Score

Malware Insights

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

This PDF file is identified as malicious by ML classifiers and ClamAV, indicating it's a phishing or trojan delivery mechanism. It contains numerous external links, including one to 'https://golowaki.ru/award?keyword=big+data+and+big+data+analytics+pdf', suggesting a lure to a malicious site. The PDF structure is also flagged as a link farm on disposable hosting, further supporting a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://golowaki.ru/award?keyword=big+data+and+big+data+analytics+pdf PDF link annotation
    • https://cdn.sqhk.co/difigobon/giqAAhe/sizefak.pdfIn PDF document text
    • https://cdn.sqhk.co/remozemot/gggdujb/simsimi_app_store.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487194/normal_5ff043a7272fd.pdfIn PDF document text
    • http://pobumur.iblogger.org/85712142147.pdfIn PDF document text
    • https://cdn.sqhk.co/vigeroti/mjciihd/27924702006.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413969/normal_60236234ea3e9.pdfIn PDF document text
    • https://cdn.sqhk.co/mudonisogub/gBaPHiP/87500367262.pdfIn PDF document text
    • https://cdn.sqhk.co/gedofovel/jggzgiZ/gimojesazexes.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tesotiwapax/nijitapet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13d90f2d-119e-4424-be33-123cbc2cab7a/is_game_maker_studio_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1887fc6-72f9-4470-b859-86167eeaa030/jetblue_carry_on_size_inches.pdfIn PDF document text
    • https://6593eeda-10fe-4128-810f-cbbc79f0a4f8.filesusr.com/ugd/c0a4bf_6e557a3857db420b864f92329b255aa4.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vofadoloves/warhammer_40k_codex_list.pdfIn PDF document text
    • http://kusuganuxe.epizy.com/lilarilawekufibizeronavib.pdfIn PDF document text
    • https://s3.amazonaws.com/degisapemifa/lagu_cinta_luar_biasa_planetlagu.pdfIn PDF document text
    • https://070488ba-e3d9-4c74-834b-445551f5513c.filesusr.com/ugd/fb83f1_b90639004e0c4247a92cf653dd2943ce.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/49d24739-2254-4c88-a169-87ed2da432e3/who_sold_more_records_than_the_beatles.pdfIn PDF document text
    • http://legabukev.epizy.com/xudebisirupokiwikulupuwur.pdfIn PDF document text
    • https://s3.amazonaws.com/dazutun/mukitomat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0237cb01-3d1a-41de-90d0-ac7c243b0a54/84197804677.pdfIn PDF document text
    • https://s3.amazonaws.com/fajujiju/maleficent_mistress_of_evil_imdb_parents_guide.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_off0000df2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF2A 5520 bytes
SHA-256: c8c288aa8f2712410d3736dc069fada9652a29184a23c6d9847c34e2f0ae55ce
font_01_sfnt_off0000f212.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF212 10908 bytes
SHA-256: 09b2e1b0c9786766abc9fd01185510ef01257caae42e87d70619b0140b113823

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