Malicious PDF — malware analysis report

Static analysis result for SHA-256 04a0f3e01427e6df…

MALICIOUS

PDF

74.0 KB Created: 2021-04-04 07:56:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 3f2a76892d66e79d634d63d7459ed517 SHA-1: 03fe19d08ad64c37a43b6bc9e234539e7e7eb136 SHA-256: 04a0f3e01427e6df190852895f679c2d83ca014f37646a76e0a16e66b792eeeb
126 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to disposable domains, and is flagged by ML classifiers and ClamAV as malicious phishing content. The document body, though partially corrupted, suggests a lure related to 'circular saw guide rail canada', likely to entice clicks to malicious URLs. No scripts were extracted, but the overall structure and heuristic firings strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://kuzutuzo.ru/123?utm_term=circular+saw+guide+rail+canada PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4379029/normal_60182e98d3796.pdfIn PDF document text
    • http://makamar.xyz/can_you_make_pound_cake_without_a_bundt_pan0sl5a.pdfIn PDF document text
    • https://gejekawuxo.weebly.com/uploads/1/3/4/4/134497426/wilodixexixu-japab.pdfIn PDF document text
    • http://vizazovabula.mywebcommunity.org/68122111698.pdfIn PDF document text
    • http://coolmag.biz/monument_valley_game_walkthrough_level_98izyf.pdfIn PDF document text
    • http://ch-bewertung-2888.xyz/mejubavuwanozaderij66khq.pdfIn PDF document text
    • http://7gusevshop.website/jazalesibogirowegokuryl3.pdfIn PDF document text
    • http://useplafond.xyz/what_are_the_functions_of_golgi_apparatus_in_pointsrui6t.pdfIn PDF document text
    • https://wanusasa.weebly.com/uploads/1/3/1/0/131070791/849b4db16b.pdfIn PDF document text
    • https://safejabev.weebly.com/uploads/1/3/0/7/130739713/d2436c773880.pdfIn PDF document text
    • http://wadipogi.medianewsonline.com/gixeto.pdfIn PDF document text
    • https://tolonatapuxid.weebly.com/uploads/1/3/4/0/134042297/zegutiji.pdfIn PDF document text
    • http://edaruzal.xyz/dell_latitude_e6400_idt_audio_driver_windows_10l9e6v.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448323/normal_5ff59f5783444.pdfIn PDF document text
    • http://my-favshopg.online/chief_architect_x5_library_freengg72.pdfIn PDF document text
    • http://gufutaca1.xyz/81749755766o3vm9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494452/normal_60303bcb8ffa3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414491/normal_603bffd280aff.pdfIn PDF document text
    • http://reduslim-italy.site/ganapati_pancharatnam_stotram_telugu_lov87l5.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/zonebon/bomanamubipedufonefuj.pdfIn PDF document text
    • http://rurebafib.onlinewebshop.net/advocacy_advertising.pdfIn PDF document text
    • http://nizofikunatafu.atwebpages.com/ronamixemiwizuwexuvike.pdfIn PDF document text
    • https://s3.amazonaws.com/tanikanaw/pudekuteginelemazumilu.pdfIn PDF document text
    • https://s3.amazonaws.com/zatazewoz/24675990080.pdfIn PDF document text
    • https://s3.amazonaws.com/bokofapig/craftsman_lt_1500_parts_diagram.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_off0000e3fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3FB 5104 bytes
SHA-256: 2027188ddaebfff6873e2be372ac979f8ee18f79a54a34a45f45b839001fd8ad
font_01_sfnt_off0000f570.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF570 10892 bytes
SHA-256: d0e044a5ac681f8a0bbc7025454fac88ab272af32baa5dd0123c2f156778eb57

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