Malicious PDF — malware analysis report

Static analysis result for SHA-256 02cdf93ec28cc95c…

MALICIOUS

PDF

78.2 KB Created: 2021-03-19 13:15:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: eb49507ee253a2a3b93e0607df04a102 SHA-1: 202bca3416445971956e83b21bfd986e93332279 SHA-256: 02cdf93ec28cc95c6c664aa56e941f8a965e894c55cccd607e395c685147ad56
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file is a PDF that has been flagged by multiple heuristics and an ML classifier as malicious, specifically identified as a phishing trojan by ClamAV. It contains numerous embedded URLs, many of which point to disposable hosting domains, suggesting a phishing or malware distribution scheme. The document body, though heavily obfuscated, appears to be a lure related to 'minimalism live a meaningful life pdf'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://bologen.ru/award?keyword=minimalism+live+a+meaningful+life+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4407804/normal_5fd78434a393c.pdfIn PDF document text
    • http://garowige.iblogger.org/proverbs_bible_study_questions.pdfIn PDF document text
    • http://penaxuwilamufo.iblogger.org/35601285040.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478687/normal_5fe2d80aa229b.pdfIn PDF document text
    • https://cdn.sqhk.co/vowogada/jgLzhfJ/mi_screen_recorder_apk_old_version.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485436/normal_5fdc6bfaac720.pdfIn PDF document text
    • https://cdn.sqhk.co/bimolixumotu/207jjjI/96395806738.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413117/normal_603e9ec45c3e5.pdfIn PDF document text
    • https://cdn.sqhk.co/laruxibut/hfEjjeB/8_planets_in_our_solar_system_song_lyrics.pdfIn PDF document text
    • https://cdn.sqhk.co/fagisuxupinu/jahdhgt/amc_mobile_theater.pdfIn PDF document text
    • https://cdn.sqhk.co/latosagax/gdiaIid/vababoviderumujuwire.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lememisuxelivem.rf.gd/keymar_kerosene_heater_manual.pdfIn PDF document text
    • http://fezaxakanopejux.epizy.com/formation_bruitage_cinema.pdfIn PDF document text
    • http://wupubobetob.epizy.com/yellow_coldplay_piano_sheet_music.pdfIn PDF document text
    • http://mujigakevomo.epizy.com/graphic_equalizer_android_free.pdfIn PDF document text
    • http://bavunetaxigapi.rf.gd/limovazofiwowut.pdfIn PDF document text
    • http://demiwadipojaz.epizy.com/bafof.pdfIn PDF document text
    • http://dinimonubikajo.rf.gd/solidworks_tutorial_sheet_metal_drawings.pdfIn PDF document text
    • http://pemukusa.epizy.com/28922426794.pdfIn PDF document text
    • http://pebulibupa.rf.gd/jurnal_ampisilin.pdfIn PDF document text
    • http://lukigek.rf.gd/edmonton_police_report_accident.pdfIn PDF document text
    • http://momosetid.rf.gd/42837980588.pdfIn PDF document text
    • http://rolaxaja.rf.gd/bubble_shooter_ilyon_hack_apk.pdfIn PDF document text
    • http://wosipofu.rf.gd/50396822414.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_off0000f34b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF34B 5328 bytes
SHA-256: 4c5f29d2fe56802ba22f90dd48018c118589e4062916e84b3748074f64ebd506
font_01_sfnt_off0001056f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1056F 11068 bytes
SHA-256: 2ed2c7a63c8a765f3f16b3515d501aad39196f9245394b0acb35894248b8fbc6

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