Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f5d361e1b629aad…

MALICIOUS

PDF

134.7 KB Created: 2021-04-13 06:21:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 36dd359a692012ca1ec8a7005a4bbffe SHA-1: 59543ed719066fb8bc089095a8f1ebd0e6d26de0 SHA-256: 9f5d361e1b629aad21f058684a82deb0bfc0bd583d450b9535d3a06d8509306f
126 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains numerous embedded URLs, many of which are hosted on disposable domains and appear to be part of a link farm, suggesting a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains text related to search queries, reinforcing the lure of finding specific content online.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xezojetit.ru/strik?utm_term=mythology+by+edith+hamilton+audiobook+free PDF link annotation
    • http://prostotit.site/how_to_reset_ps3_remote_controlivdds.pdfIn PDF document text
    • http://slmit.fun/just_draw_level_67_catem59z.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383160/normal_6020638b7e9a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370092/normal_6062658e252ec.pdfIn PDF document text
    • http://wssummer.space/contemporary_sociology_theoryfzkpv.pdfIn PDF document text
    • http://limons.space/73716070779etp4c.pdfIn PDF document text
    • http://coolmag.biz/monument_valley_game_walkthrough_level_98izyf.pdfIn PDF document text
    • http://plafond.xyz/automatically_pictures_in_outlook_2010_gpo94dkv.pdfIn PDF document text
    • http://svoylend.xyz/dulomerakudamow97mz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393901/normal_605440c5b0a29.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488315/normal_5fc91c5121130.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407087/normal_606781c592fc8.pdfIn PDF document text
    • http://gaydating.world/graphic_design_portfolio_ucfg8u43.pdfIn PDF document text
    • http://life-news.tech/murudiriwivuwati96o.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485929/normal_60127c464c1a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467043/normal_5fd9c9293104e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449014/normal_6026dd5b101a8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389601/normal_6062b5a1c1564.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF1D 62892 bytes
SHA-256: a108115b760a346e9add0966d7e78a82204c8a1e04de920f8728b0c63d8e9748
font_01_sfnt_off0001ac64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AC64 5336 bytes
SHA-256: 62e55ec6ad56b227e38f9a7c84c3190404974bdf0a3bb62e8eaed9bf2b931a8b
font_02_sfnt_off0001be77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BE77 11836 bytes
SHA-256: 1b77537ba5c982d841770c3472e02c16635faf50d45eaf88e03b95ff4fdddd5a
font_03_sfnt_off0001e70a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E70A 16036 bytes
SHA-256: 9559dd1bd908241551916101fda3d445a26f5c4b506a1423f23393456f9d5940
font_04_sfnt_off0001fb73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1FB73 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

Open this report in the interactive analyzer, or submit your own file for analysis.