Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bb0d258d31805f5…

MALICIOUS

PDF

75.1 KB Created: 2021-01-22 06:07:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 19d2f51035ca292ee70207c1414e7859 SHA-1: 7412424b864032a9e7c468e3ce834563bab55f7f SHA-256: 7bb0d258d31805f550d20a48ac4c2e19d1fcd56d832e6b080fa123a57556fc3d
126 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with one specifically pointing to 'trafftec.ru/aws', suggesting a lure to a potentially malicious site. The PDF structure and the presence of embedded links are consistent with phishing or malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafftec.ru/aws?utm_term=10000+reason+piano+sheet+music+pdf PDF link annotation
    • https://site-1176272.mozfiles.com/files/1176272/diba_true_shoes_reviews.pdfIn PDF document text
    • https://site-1216840.mozfiles.com/files/1216840/education_pamphlet_templates.pdfIn PDF document text
    • https://cdn.sqhk.co/tuwagezo/Ejc94UJ/94890891214.pdfIn PDF document text
    • https://cdn.sqhk.co/noperizapewo/A6Qghjb/stick_it_to_the_man_game.pdfIn PDF document text
    • https://cdn.sqhk.co/vuzefegevo/ihhckhi/80425924070.pdfIn PDF document text
    • https://cdn.sqhk.co/tajaketo/hH3SkYM/dental_assistant_hygienist_air_force.pdfIn PDF document text
    • http://tomorubi.22web.org/gap_uk_mens_size_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/bozutebux/c6jaqd4/zitikexunageji.pdfIn PDF document text
    • https://cdn.sqhk.co/xipepovivik/hhjyq42/monster_jam_steel_titans_cheats_ps4.pdfIn PDF document text
    • https://cdn.sqhk.co/pixafosabow/xK6iaja/runosi.pdfIn PDF document text
    • https://cdn.sqhk.co/mamevugixej/didihii/iron_superhero_war_superhero_games_mod_apk.pdfIn PDF document text
    • https://site-1176039.mozfiles.com/files/1176039/93466693607.pdfIn PDF document text
    • https://site-1200561.mozfiles.com/files/1200561/17238570192.pdfIn PDF document text
    • https://cdn.sqhk.co/bejomewuv/hfvaa7c/wagabewegijavabofuda.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://womutefipile.epizy.com/jennifer_s_song_hagood_hardy_sheet_music.pdfIn PDF document text
    • http://juwemijawikipo.epizy.com/zizefalozigijekamobiwi.pdfIn PDF document text
    • http://dujazenemelix.epizy.com/south_movie_2019_3gp.pdfIn PDF document text
    • http://nopizapokife.epizy.com/metro_exodus_pc_performance.pdfIn PDF document text
    • http://xivavop.rf.gd/zudanufekozuwozirigusaji.pdfIn PDF document text
    • http://rozibata.epizy.com/ronujalidijapovomula.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_off0000ea39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA39 5464 bytes
SHA-256: e46460b1d213efefdb34a611129867f42333982646ec736db7d800c35f8753ef
font_01_sfnt_off0000fca4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCA4 10024 bytes
SHA-256: e9d9eb47f04054ffda67f3bef93b2db78c01ab57059a45400f949e08b7a672c0

Open this report in the interactive analyzer, or submit your own file for analysis.