Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a86cdce14038359…

MALICIOUS

PDF

76.8 KB Created: 2021-03-24 03:56:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4cf638dcd54ca0bae36d172570c06e4d SHA-1: b5f0722e430ae88425c83981736a00a95b4edbd3 SHA-256: 0a86cdce14038359e87368c1011ca8206022fa7699d77b3af5ca39375a6ac5cc
96 Risk Score

Malware Insights

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

The file is a PDF document flagged as malicious by ML classifiers and ClamAV. It contains an embedded URI pointing to 'leonvi.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to software functionality, consistent with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://leonvi.ru/aws?utm_term=excel+2013+power+query+missing
    • https://cdn.sqhk.co/semoxumid/Vhgge08/wopal.pdf
    • https://cdn-cms.f-static.net/uploads/4500678/normal_60384a52d4e22.pdf
    • https://cdn.sqhk.co/telazaje/gjlKgcF/usa_hockey_events.pdf
    • http://gloslides.com/mebizosinunavp5zkc.pdf
    • http://myfirstsite.xyz/vogotixajurabapevevucejcm.pdf
    • http://biomaniix.website/scramble_for_africa_webquest_answer_keyfocnc.pdf
    • https://cdn.sqhk.co/desixurate/cgdojbw/zidotesokipitizik.pdf
    • https://cdn-cms.f-static.net/uploads/4446497/normal_6014dafcbb1e1.pdf
    • https://cdn.sqhk.co/baxijaxazixi/2OPiaha/madalena_pico_island_weather.pdf
    • http://kprovk.xyz/xenamevod9bzfg.pdf
    • https://static.s123-cdn-static.com/uploads/4423454/normal_5ff4b45ceb9d0.pdf
    • http://salet.store/96009224732yijzq.pdf
    • https://cdn-cms.f-static.net/uploads/4501503/normal_6018e69e4a627.pdf
    • https://cdn-cms.f-static.net/uploads/4381962/normal_6018a5cdb27c8.pdf
    • http://nikecortez.net/564045211229g37w.pdf
    • https://cdn-cms.f-static.net/uploads/4414868/normal_60115d6203e31.pdf
    • http://larts.digital/botikikasawonulogudu6chmw.pdf
    • https://cdn-cms.f-static.net/uploads/4414847/normal_6014535ed67ad.pdf
    • https://cdn.sqhk.co/kukisigafumi/ehgjd0s/audiotool_download_track.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/davawina/lulupejiw.pdf
    • https://s3.amazonaws.com/xupovobejanam/xideva.pdf
    • https://s3.amazonaws.com/xufujofaleki/free_call_of_duty_2_setup._exe.pdf
    • https://s3.amazonaws.com/bejokazemur/analisis_economico_definicion.pdf
    • https://s3.amazonaws.com/mokamoba/tipuxepeda.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_off0000e3cf.bin
c46383dca413bf40d865fd9ba0e4c9a81f87f2ab97f0b60b8e6d0775e446caaf
pdf-font-stream PDF embedded font (sfnt) at offset 0xE3CF 5876 bytes
font_01_sfnt_off0000f7e2.bin
a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
pdf-font-stream PDF embedded font (sfnt) at offset 0xF7E2 1800 bytes
font_02_sfnt_off0001006f.bin
91f3331b478de97ff50ac10b024d7fefed643e2f589e2ce9bc104be86c7ab60a
pdf-font-stream PDF embedded font (sfnt) at offset 0x1006F 10708 bytes