Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab6cd17cff71cf8c…

MALICIOUS

PDF

81.6 KB Created: 2021-03-18 10:05:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1666b797b9b5ffd07cce493a7709e7e3 SHA-1: 741c2f6c27ac4f26432ddf2f2e3fb9d3acdec360 SHA-256: ab6cd17cff71cf8c56b88e908dba185caac2bad643c2bbe8d84724f93898926c
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan payload. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to trick the user into visiting a compromised resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://jumiwimov.ru/123?utm_term=aprikosenkerne+kaufen+reformhaus
    • http://pivojowemetobiv.mywebcommunity.org/importance_of_behavioral_science.pdf
    • http://tanijijud.sportsontheweb.net/nupuzuneboderuvek.pdf
    • https://cdn.sqhk.co/furugilenu/zLjd62w/baleadas_hondurenas_en_ingles.pdf
    • http://bupetud.xyz/what_are_the_disadvantages_of_dna_testing58dr6.pdf
    • http://buloshnaya.site/x_plane_flight_simulator_apkpureeloxo.pdf
    • https://cdn.sqhk.co/waxipefimafa/u2Wiems/buzuwazebutufevaxe.pdf
    • http://gonifarej.mywebcommunity.org/romeo_juliet_telugu_movie_songs_download.pdf
    • http://zenajok.medianewsonline.com/lords_of_darkness_book.pdf
    • http://ejinaya.com/which_word_does_not_belong_to_the_group_shoes_belt_wallet_shirtvukw4.pdf
    • http://rapoxarawiwalo.sportsontheweb.net/99509412253.pdf
    • https://cdn.sqhk.co/vopofuxo/gilicLq/fejolafinozu.pdf
    • http://roboludawu.mywebcommunity.org/riddex_sonic_plus_reviews.pdf
    • https://cdn.sqhk.co/budajawisore/gdKrf8Z/inception_music_slowed_down.pdf
    • http://niluwipewuxasa.medianewsonline.com/defense_health_board_reports.pdf
    • http://gadivawiw.sportsontheweb.net/sumusolarokuxoje.pdf
    • http://strahauto.website/wexedomitizurobo3yjmo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/zamuriza/quality_improvement_work_plan_template.pdf
    • https://s3.amazonaws.com/podawakumepewez/zanirefab.pdf
    • https://s3.amazonaws.com/pipaneku/76953369675.pdf
    • https://s3.amazonaws.com/janodojivi/64524085139.pdf
    • https://uploads.strikinglycdn.com/files/dc0e9c86-cb4b-4971-b57b-fdd036464960/flysky_gt3b_distance.pdf
    • http://zevesijuduma.atwebpages.com/health_and_safety_officer_salary_ontario.pdf
    • https://uploads.strikinglycdn.com/files/ec409138-a66c-400d-9827-a8fa2b2139f3/78639103122.pdf
    • https://s3.amazonaws.com/fejenijovekozu/moloteposifafoto.pdf
    • http://tibamupebunod.atwebpages.com/23927666908.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eff4.bin
2e3559aab9aa172595e2aab9db503973d250eda5b5dbccfad8e5c1170fc23d66		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEFF4 4964 bytes
font_01_sfnt_off0001009e.bin
647687af73e276e9b94837c29a16900784563bc736026596b695bcc5fcca4557		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1009E 12376 bytes
font_02_sfnt_off0001290d.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1290D 4324 bytes

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