Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9c82c6759773541…

MALICIOUS

PDF

75.9 KB Created: 2021-04-14 00:31:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: fbabb171dbcac69fb8a772867e6b2c52 SHA-1: e039f8ec255a5177c7b4160e895d3db666b9c25e SHA-256: c9c82c67597735410f63b928dac5f65074dc4dc65151ee2f659f51ce6638ccf3
146 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a callback-phone (TOAD) lure. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://ponafet.ru/strik?utm_term=divine+intimacy+baronius+press PDF link annotation
    • http://fanisore.sportsontheweb.net/kiss_the_rain_piano_sheet_roblox.pdfIn PDF document text
    • http://jibakerutev.mypressonline.com/55717430116.pdfIn PDF document text
    • https://cdn.sqhk.co/fogizotufijo/dJicnpb/ayo215_bother_you.pdfIn PDF document text
    • http://xenojupu.mywebcommunity.org/23013014955.pdfIn PDF document text
    • https://cdn.sqhk.co/zepipawetopi/06KjaPd/best_free_photo_editor_app_android_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/zedawuzijis/ahjMhaL/spiral_fracture_sign_of_abuse.pdfIn PDF document text
    • http://ronifibofizet.medianewsonline.com/jixojafevugofapuxixovefa.pdfIn PDF document text
    • https://cdn.sqhk.co/zowonefaso/jhdZN8X/power_equalizer_10-_band_pro_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/xenotami/ifgdeGO/teledikisowidamitesanerem.pdfIn PDF document text
    • https://cdn.sqhk.co/peluxisomex/iJii1ZO/xexitudu.pdfIn PDF document text
    • http://dimozakebaba.scienceontheweb.net/beauty_and_the_beast_theme_song_piano_sheet_music.pdfIn PDF document text
    • https://cdn.sqhk.co/laripikiwafo/cibhcgi/gba_emulator_free_download_apkpure.pdfIn PDF document text
    • http://xepelewatelaziv.getenjoyment.net/velatenutavakevokewesisol.pdfIn PDF document text
    • http://pogawubujogeje.mypressonline.com/juzisiteridazuf.pdfIn PDF document text
    • https://cdn.sqhk.co/delojiwuguj/fCUjfhc/45910948207.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/ragejufa/nasazisonitivije.pdfIn PDF document text
    • http://samepuwewar.rf.gd/20174263619.pdfIn PDF document text
    • http://vegefozexus.rf.gd/vopas.pdfIn PDF document text
    • http://jedajokojar.epizy.com/30920485455.pdfIn PDF document text
    • http://kotidaw.epizy.com/lightroom_presets_pack_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/jemazejodep/gedevasuraf.pdfIn PDF document text
    • http://siwemoxoxawevuv.atwebpages.com/download_essential_hematology_6th_edition.pdfIn PDF document text
    • http://molagegivijoxu.onlinewebshop.net/the_brain_fog_fix_recipes.pdfIn PDF document text
    • http://gasadesa.epizy.com/dependent_and_independent_variable_in_research.pdfIn PDF document text
    • https://s3.amazonaws.com/xufujofaleki/maremomanefexepuxo.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_off0000e85d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE85D 5348 bytes
SHA-256: 1d87c3390623c8b5879f603382533a0320552c90fc49b7401aa2fb2b360cc407
font_01_sfnt_off0000fa7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA7F 11404 bytes
SHA-256: a07155b3cb28c4104c3df72afad68f50131ad22ac0375e9837b8ce014d5a868e