Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d34964d8e4bb31a…

MALICIOUS

PDF

69.0 KB Created: 2021-01-31 01:06:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 818c5301d5e8c02dd41a6384780346bc SHA-1: 2d98bf7a93de7738f25c7784fa17972036d4641a SHA-256: 9d34964d8e4bb31ab2ec4c67cc732bf1b09135301e3e0f550cb9d15538e256b5
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, identified as a phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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://maypoin.ru/123?utm_term=houghton+mi+newspaper+classified+ads PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4488580/normal_5ff1523e8035b.pdfIn PDF document text
    • https://cdn.sqhk.co/jukelifawap/ihbHfjf/euro_truck_driver_simulator_game_download.pdfIn PDF document text
    • http://lidlid.xyz/scifi_space_racing_3d_hover_car_racesk7pt4.pdfIn PDF document text
    • https://cdn.sqhk.co/vifutetax/VShaVje/origami_halloween_mask_pattern.pdfIn PDF document text
    • https://cdn.sqhk.co/kuzosexiwugu/gieO6Z4/roll_tenkyu_ball_into_hole.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/risalenefazozo/hand_embroidery_designs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/fovezewi/ansys_hfss_full_form.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxalowafokuvo/62038652192.pdfIn PDF document text
    • http://gosigugul.epizy.com/gopubilesenorawejitufijab.pdfIn PDF document text
    • http://bunurakugixopa.rf.gd/2d_animation_course_syllabus.pdfIn PDF document text
    • https://s3.amazonaws.com/vosimalume/49671623000.pdfIn PDF document text
    • https://s3.amazonaws.com/zunewidimem/solitary_pulmonary_nodule_fleischner_guidelines.pdfIn PDF document text
    • http://wememone.rf.gd/kisawejetotixivofud.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_off0000cf7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF7D 5624 bytes
SHA-256: e4c32538dfdfa4005def4afb7f6e6a46147dff85a0361583dd47af4ed7c710df
font_01_sfnt_off0000e286.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE286 10868 bytes
SHA-256: 807f680b3a75c361c2ab8167b871c0d5f6878050ec661e67dd21586c3fdc8106

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