Malicious PDF — malware analysis report

Static analysis result for SHA-256 42b67c5546ea1a7f…

MALICIOUS

PDF

76.0 KB Created: 2021-03-10 06:17:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 1fdff4434c2b4bc9f3ba19239990d3ab SHA-1: 3ed1193823a119822f49c8d3f014bf028ec831d4 SHA-256: 42b67c5546ea1a7f5b13fb106cae7f9044ae7928bfa98536ba43c5eb4e34a590
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document contains numerous external links, with one specifically pointing to a URL that mimics a 'florida dmv odometer statement pdf', suggesting a phishing or credential harvesting lure. The PDF structure and embedded links indicate it functions as a link farm, likely directing users to malicious sites or second-stage payloads.

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://jumiwimov.ru/award?keyword=florida+dmv+odometer+statement+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4423471/normal_5fd7ef06df7e1.pdfIn PDF document text
    • https://nuresoxak.weebly.com/uploads/1/3/1/3/131380504/zetapijifubaxopepedi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424011/normal_5ff64eb45b6af.pdfIn PDF document text
    • https://cdn.sqhk.co/xojelumegasi/S9iDjd2/15953555101.pdfIn PDF document text
    • http://ruroraratotu.66ghz.com/lagu_shinedown_simple_man.pdfIn PDF document text
    • https://wanevowak.weebly.com/uploads/1/3/4/4/134465130/fuwisoluzewabemaset.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380403/normal_603460bd53fe2.pdfIn PDF document text
    • https://cdn.sqhk.co/giwumazusew/5igihjb/no_dice_in_spanish.pdfIn PDF document text
    • https://cdn.sqhk.co/kujexelorite/DVigiii/eight_planets_around_the_sun.pdfIn PDF document text
    • https://cdn.sqhk.co/gujowaxexag/hxwZzBX/1798575037.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b80c64ba-57f5-4ad1-9233-480d6431c2a1/dyson_small_ball_multi_floor_upright_vacuum_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/66658695701.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd8fb26e-1ffa-4b93-81b6-e98042fc11f3/towumuwariduwox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38d1cc5b-d7a8-4112-91fa-9cc67c293e8d/toto_washlet_c100_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec9ca196-adbd-4d7b-a3db-bf02d77ab1c2/76679250064.pdfIn PDF document text
    • https://s3.amazonaws.com/wunupalezozerud/ladogitepirapowiropanu.pdfIn PDF document text
    • http://mutifesojare.epizy.com/41183807266.pdfIn PDF document text
    • http://fifofiboveligaf.rf.gd/jimokogujivajigugemixu.pdfIn PDF document text
    • https://s3.amazonaws.com/gosete/present_perfect_questions_and_short_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbeecd24-8d0c-4e73-af62-9c10376ebce2/45340964696.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_off0000ee17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE17 5200 bytes
SHA-256: 08b2c0026a37faa1bb4f5d57d9596bbbaee4fa4cf7bfecfd2aaf7823c31dfb3d
font_01_sfnt_off0000ffb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFB9 10304 bytes
SHA-256: 8f124d9f813b78f41397eeaaa6bec25839090d771a7069884bb48760404f4ddc

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