Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7476bf57dae490c…

MALICIOUS

PDF

66.9 KB Created: 2020-11-22 16:07:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dd0755f7a0f50a1c63118e9d60486550 SHA-1: d9d2bc647a94b621888c95d829571644685d1b4e SHA-256: f7476bf57dae490cebbe154fdde1333827232f3c665ee5b070eed75bd6f5d9b6
136 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' suggests the document is designed to trick users into downloading a password-protected archive, a common tactic for evading gateway security. The embedded URL points to a resource that appears to be related to a 'work activity log excel template', reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://traffnew.ru/aws?utm_term=work+activity+log+excel+template
    • https://cdn-cms.f-static.net/uploads/4367017/normal_5f9f75c7c3770.pdf
    • https://cdn-cms.f-static.net/uploads/4381297/normal_5f9b2b4c6563f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/41822e96-e874-4a8c-87e0-5fca4b577ba7/maynard_ferguson_chameleon_sheet_mus.pdf
    • https://s3.amazonaws.com/kalufizefem/word_with_the_prefix_retro.pdf
    • https://s3.amazonaws.com/damerirazib/free_after_effects_title_animation_templates.pdf
    • https://s3.amazonaws.com/xanebavifamopez/giferuxutosova.pdf
    • https://s3.amazonaws.com/datarofapakil/marbles_and_jokers_game.pdf
    • https://s3.amazonaws.com/fusidejebi/paladin_rotation_ffxiv.pdf
    • https://s3.amazonaws.com/ribowexulo/71199536642.pdf
    • https://uploads.strikinglycdn.com/files/f8c87361-3185-4259-bdaa-6908024980de/city_of_walnut_creek_minimum_wage.pdf
    • https://s3.amazonaws.com/webipejonavuv/whatsapp_app_now_for_jio_phone.pdf
    • https://uploads.strikinglycdn.com/files/e6e5e1b6-32f8-4cc0-939c-b0cac5e04408/the_self-taught_programmer_the_definitive_guide_to_programming_professionally_download.pdf
    • https://s3.amazonaws.com/xipavir/avermedia_game_capture_hd.pdf
    • https://s3.amazonaws.com/veraxawewib/74472835195.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc03.bin
721b31d5e0b026d508aa926c21a26859d593b424603d05c25a454c76d569fb2c
pdf-font-stream PDF embedded font (sfnt) at offset 0xCC03 5380 bytes
font_01_sfnt_off0000de5d.bin
ea0f9e7d8dea906cbac79443ab146c0351977d3130d91a5c4f038381500b184a
pdf-font-stream PDF embedded font (sfnt) at offset 0xDE5D 9492 bytes