Malicious PDF — malware analysis report

Static analysis result for SHA-256 18f04f115a33deeb…

MALICIOUS

PDF

80.3 KB Created: 2021-04-28 21:33:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 267e300f8fe09bc74fa5905bf72e1a82 SHA-1: 78e326a713a2273a496ceb54587b78a7be63ac9e SHA-256: 18f04f115a33deeb33899393392cc57905dfbb0b9d51441e17e70177e364f32b
126 Risk Score

Malware Insights

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

The PDF document contains embedded URLs and heuristics indicate it is a link farm designed to redirect users to malicious sites. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. The document body, though obfuscated, contains references to 'Garmin drivesmart 55 lmt-d test' and 'wkhtmltopdf', suggesting a lure to a site related to product reviews.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://lozipotod.ru/strik?utm_term=garmin+drivesmart+55+lmt-d+test PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4377120/normal_6041c7d0abd07.pdfIn PDF document text
    • http://wevesapawuzu.22web.org/pdf_bookmark_editor_online.pdfIn PDF document text
    • http://carinsusa.info/spectrum_math_workbook_grade_8_free92cvz.pdfIn PDF document text
    • http://allwoman.site/bl3_anointed_weapons_guideywph4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501231/normal_5fc7a64f367cd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366015/normal_601c5f533c433.pdfIn PDF document text
    • http://tesocoin.online/94353769947c3m1e.pdfIn PDF document text
    • http://leopolds.space/super_mechs_full_gameplay2bgvi.pdfIn PDF document text
    • http://russianpatentexpert.com/how_to_set_up_my_account_with_service_canada666lq.pdfIn PDF document text
    • http://investmag.org/mark_bible_quiz_questions_and_answers_in_tamiles2w6.pdfIn PDF document text
    • http://summ-ita.space/27724850567beam9.pdfIn PDF document text
    • http://tiktoktop.design/ccure_9000_certificationlm05i.pdfIn PDF document text
    • http://expo-kit.ru/can_you_bypass_the_lid_switch_on_a_kenmore_washery3z18.pdfIn PDF document text
    • http://fdvsefwfrw.space/554268480785o499.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
    • https://7f03322d-63d6-449b-a8c2-a80beffeb2b6.filesusr.com/ugd/2994dd_edcabe52c4884903b5fd11eb099b0a27.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/siemens_hearing_aid_models_and_prices.pdfIn PDF document text
    • https://s3.amazonaws.com/memobofilenabon/mubupabimekejuronovidinan.pdfIn PDF document text
    • http://xakonike.epizy.com/63124592242.pdfIn PDF document text
    • http://modunup.rf.gd/4463807039.pdfIn PDF document text
    • https://s3.amazonaws.com/xakusineba/16831571629.pdfIn PDF document text
    • https://s3.amazonaws.com/jemisajoda/66274706490.pdfIn PDF document text
    • https://f421159b-d329-41e8-bc42-072bc93e4c50.filesusr.com/ugd/65d6f7_73ce535d93414c31b9594fbac01bb7ff.pdf?index=trueIn 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_off0000edbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDBD 4896 bytes
SHA-256: ed2e49c30855f5e120ebd2975797bfa3db63242c3e6bbd6bc4cd5950e32f15a0
font_01_sfnt_off0000fe53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE53 11412 bytes
SHA-256: 8b523e12689ba4f90823c30077a21f0117e79a9eb796e8f4d349d6dfba51b93b
font_02_sfnt_off00012535.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12535 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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