Malicious PDF — malware analysis report

Static analysis result for SHA-256 9287d8c5ffd989ca…

MALICIOUS

PDF

80.1 KB Created: 2021-06-04 08:42:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 1380f56b474ba50c728da91cf6d044d9 SHA-1: 42d219d461f85703b3f878310fa14f60e53c621a SHA-256: 9287d8c5ffd989cade6954817e84bc555fb019f5df712cf1325fa90f0ce3ff2f
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, specifically as a phishing trojan. The embedded URL points to a site offering a 'mini militia hack version free download', indicating a social engineering lure. Although no scripts were explicitly extracted, the PDF structure and the presence of an external URI suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://catamma.ru/pbw?utm_term=mini+militia+hack+version+free+download+unlimited+ammo+and+nitro PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369926/normal_60222c6e5f859.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409796/normal_60321866bfc74.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426957/normal_605c85271316e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366336/normal_600ddc59cd041.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385198/normal_5ffb4a4ae5280.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/c7dc80eb-b4ab-4977-9e5e-33614ee18cfb/tontos_de_capirote_gratis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/556be223-c35c-4041-aeb9-f16252300c69/george_foreman_lean_mean_fat_grilling_machine_cooking_times.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ef8f5a6-2e35-41c0-b5b9-d151288fc070/mystery_brain_teaser_puzzles.pdfIn PDF document text
    • http://fokopaviwu.pbworks.com/w/file/fetch/144562701/china_dynasties_of_power_worksheet_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/afa77525-0e09-47c1-884f-947c8dea740c/jenotitupewelegatit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8eb6fe8-4b53-499d-9e76-00db84abf561/20342424339.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7bdefa6-d88a-4073-8539-e40417603967/what_do_you_mean_vibrant_economy.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83d231c0-4e2e-4d35-8801-267c5c59e6b4/36721743786.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a84dc302-8e5f-4b3b-8d0f-4fe76c7b1c21/american_red_cross_blood_drive.pdfIn PDF document text
    • http://natizasex.pbworks.com/w/file/fetch/144577728/jivaliratuseguwawez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8c668b5-b783-4bce-9b21-cc0b3c8637f4/93603112783.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf26dc23-88a3-4e32-b87d-f8a72d850a96/19272864321.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53ab4636-c795-4c95-9912-da796a7c5d24/15.1_the_periodic_table_worksheet_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b60cce36-9f6d-4747-a3b7-cd1011ce21c6/how_to_set_timer_on_apple_watch.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45e62b2d-d3ad-4440-8135-0c26eb1dce1a/best_translator_app_for_iphone_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fab25751-9d87-48f1-a48b-41e4f410a701/one_thing_remains_chords_piano.pdfIn PDF document text
    • http://muzupusap.pbworks.com/f/33955712904.pdfIn PDF document text
    • http://zedilowozare.pbworks.com/f/church_hymn_what_a_fellowship_lyrics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab345d24-529b-4851-974d-750bd59a8f5b/vampire_diaries_book_14_read_online.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_off0000fb3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB3F 5484 bytes
SHA-256: c9cb58fc00d49952d128390e3bf88d87e72703596cfc8efbd0935b6c38989b5f
font_01_sfnt_off00010dd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DD6 10612 bytes
SHA-256: f902e3456fc8a657d842117cb24df82d082cc19a8b566648e0cc7e9e7c0abf3b