Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d020902e6caa47f…

MALICIOUS

PDF

76.4 KB Created: 2021-03-22 04:57:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47d8d60dc7c66fe36a230c7dc982120c SHA-1: d6079e3e92a43b58841d00b6f48f3d44bf3c0893 SHA-256: 6d020902e6caa47f3c74b8171eed731fb179b328f1d11fdd8f9adfa0245d108a
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a critical heuristic identifying a link farm designed to direct users to potentially malicious content. One prominent URL, 'https://mezovuduw.ru/wix?keyword=the+secret+life+of+bees+novel+pdf', appears to be a lure for downloading further malware. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://mezovuduw.ru/wix?keyword=the+secret+life+of+bees+novel+pdf
    • https://cdn.sqhk.co/kejopala/EhguRT5/prison_escape_game_answers_upper_levels.pdf
    • https://cdn.sqhk.co/joxesinejag/F9jdRwn/lucas_off_road_racing_2020_schedule.pdf
    • https://cdn-cms.f-static.net/uploads/4380876/normal_603af2526eca8.pdf
    • https://cdn.sqhk.co/rilowikapaz/23P0FMk/chess_piece_tattoo_king.pdf
    • http://palikexifumalam.mywebcommunity.org/master_data_management_software_free.pdf
    • https://static.s123-cdn-static.com/uploads/4389108/normal_5fefa0ad7388e.pdf
    • https://cdn-cms.f-static.net/uploads/4465149/normal_602d0ac3bd0ea.pdf
    • https://static.s123-cdn-static.com/uploads/4409250/normal_5fdee3755c3e0.pdf
    • https://cdn.sqhk.co/fagaxirupunu/i5s2LAm/texerapodibes.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/debiwelof/95650555488.pdf
    • https://06e27459-8a58-4d01-a48e-f853eab966f6.filesusr.com/ugd/55f1a0_87b7944ec7ec42dd9ad0f150fdedbbcc.pdf?index=true
    • https://7f3356c1-ec1f-498a-9d41-5b36c14d87b7.filesusr.com/ugd/98d33d_3d985e9f33d640a0ae997a6681af6bb2.pdf?index=true
    • https://d71fc03c-aea6-48f7-a990-8afffb22108d.filesusr.com/ugd/3de8a6_ff5afe3ea7b442298027af250d009ecc.pdf?index=true
    • https://s3.amazonaws.com/xovajukoxin/autocad_2013_training_manual.pdf
    • https://s3.amazonaws.com/juzowilipi/64006850575.pdf
    • http://farudigenudoze.onlinewebshop.net/farmakologi_ampisilin.pdf
    • http://molujafit.atwebpages.com/manual_lisp_para_autocad.pdf
    • https://af30af13-e0b7-4de0-aca7-7783c01eade2.filesusr.com/ugd/9757e7_90829da09635461aa378aeb9052debae.pdf?index=true
    • https://s3.amazonaws.com/pavujiniz/goterudubuzuj.pdf
    • https://98e80eac-0673-4bf9-a3de-4132461903b3.filesusr.com/ugd/1acd69_03e6a5fbdaa0413a871e46d6782dbdd0.pdf?index=true
    • https://cf2e1f24-e5f1-4289-9567-3affce9c164e.filesusr.com/ugd/a4ea6c_215254252e924af3812148f9443abd6b.pdf?index=true
    • https://30dce114-5b7d-4ba4-aa44-e083516804ec.filesusr.com/ugd/7de0fd_7480ef48bb8a491b9ca6b34254e8f151.pdf?index=true
    • https://50aad03f-9d2a-47e6-be13-abd12f321b17.filesusr.com/ugd/3fd638_a0f6a3f0976642d7a32ad28ef872784b.pdf?index=true
    • https://s3.amazonaws.com/xozeb/manijulaxovoxazom.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_off0000effd.bin
d007f5eb53e1ba80700241ddca962e8df57bdc0b1817c0a1b2922ff90d66f758		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEFFD 5184 bytes
font_01_sfnt_off0001019c.bin
9098a37e0c0beb03533467df903b1da6569626d4b7b37413bb3426ea37e193d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1019C 10080 bytes

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