Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cb805413cd3c6c4…

MALICIOUS

PDF

74.9 KB Created: 2021-03-08 19:24:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 656012d0e59368c0ff3030c23ba77c8f SHA-1: 04eba6d33be4b4ded88a333d047255fa37d37b62 SHA-256: 8cb805413cd3c6c473bb77005e8dbfc06b2d5a301023a42f40eddf408097f740
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a link disguised as a search result, likely to a malicious website. The presence of embedded URLs and the overall structure suggest an attempt to trick the user into navigating to a compromised resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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://mezovuduw.ru/123?utm_term=rapidex+english+speaking+book+pdf+in+marathi PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4462073/normal_600aebd268de8.pdfIn PDF document text
    • https://cdn.sqhk.co/xusarukave/jgifMid/personalized_wedding_cake_cutter_set.pdfIn PDF document text
    • https://cdn.sqhk.co/kovixileta/XYhfgha/goal_goal_tips_for_the_weekend.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470545/normal_5ffa3e9de752f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366369/normal_60011013101a4.pdfIn PDF document text
    • https://cdn.sqhk.co/suwajipox/ibSiaji/los_angeles_dodgers_logo_wallpaper.pdfIn PDF document text
    • https://cdn.sqhk.co/keridola/Ziegajc/pac_s_joyce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486353/normal_5fda791252bb0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393188/normal_5fceed50969f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444115/normal_60282bde3263a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392191/normal_6000103985073.pdfIn PDF document text
    • https://cdn.sqhk.co/vupapevixu/jghePgg/voice_access_settings_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/kopilixa/isk24gj/31450555733.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376612/normal_5fd909ad22cc4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424935/normal_60152e050a6ca.pdfIn PDF document text
    • http://javugejerez.22web.org/14337340417.pdfIn PDF document text
    • https://cdn.sqhk.co/bipujawojeli/ijc4Mhb/78272263162.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388067/normal_5fe308d036f7a.pdfIn PDF document text
    • https://cdn.sqhk.co/gisepavuv/gi4zhgc/thrift_stores_long_beach_island_nj.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/0700ba8a-fa7c-48e6-b7ba-2a14c200e19c/87979682651.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53035c35-58f1-45d1-89f9-84278129a2cb/dajozuvidikujesanu.pdfIn PDF document text
    • http://muwalolerede.epizy.com/42970714801.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3d655e5-896e-4537-a811-444d26ec9a29/the_entertainer_music_notes_for_piano.pdfIn PDF document text
    • http://vunatavinede.epizy.com/fun_icebreaker_games_to_play_on_zoom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a13f66ad-4790-44ab-9572-afe335c41410/5_minute_bottle_crafts.pdfIn PDF document text
    • http://fawekeziba.rf.gd/cycle_race_game_pc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d84715ed-0d2e-4c4b-a248-7ab4e22b2604/harley_davidson_owners_manual.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_off0000e4c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4C2 5732 bytes
SHA-256: b36d4f282b99ee3600ae328d1532797f6fda89f0ddb0bb5fa17f45b58f3e89df
font_01_sfnt_off0000f81f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF81F 10852 bytes
SHA-256: de95a3ff7ca3bb1b9f066eaf57c13dad02d45430947441211732f5926c30c369