Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae36f81b5c7521e0…

MALICIOUS

PDF

81.8 KB Created: 2021-04-11 14:00:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: aa6b04a0f8cfd700c9bd4728b8e11d35 SHA-1: 7496f5e677728d5fbe5b11a535736d776387d506 SHA-256: ae36f81b5c7521e03ef561963566ccede35c63da208d394579a07ab7624ea023
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to host a malicious payload or redirect the user to a phishing site. Although no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest an attempt to exploit the user's trust through a deceptive document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://druttle.ru/strik?utm_term=medical+case+report+sample+pdf PDF link annotation
    • http://yesitalia.fun/ncis_new_orleans_episode_guide_season_672shp.pdfIn PDF document text
    • https://cdn.sqhk.co/lizasizova/iaigrLB/44996014763.pdfIn PDF document text
    • https://cdn.sqhk.co/wogokodu/vimjdjg/goparusatefuto.pdfIn PDF document text
    • http://wow50.pro/air_conditioner_repair_book_in_hindijr82k.pdfIn PDF document text
    • https://cdn.sqhk.co/pedajobu/jcWiG58/d_j_music_app_download_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/numovasovev/djbhjKR/12365012721.pdfIn PDF document text
    • http://repair-planshetov.ru/50985851348zsn7t.pdfIn PDF document text
    • https://cdn.sqhk.co/semexixok/jfoe3UY/dafoki.pdfIn PDF document text
    • http://topmassage.net/fetif4a51k.pdfIn PDF document text
    • https://cdn.sqhk.co/vituxezij/iigdjf0/soccer_battle_apk_indir_club.pdfIn PDF document text
    • http://sentytld.online/famuzuzalipbo5i.pdfIn PDF document text
    • https://cdn.sqhk.co/gutifusuf/WE2hZgg/new_combat_flight_simulator_2020.pdfIn PDF document text
    • http://lnstagramsupportinfo.com/clubbers_guide_20096im15.pdfIn PDF document text
    • https://cdn.sqhk.co/kogewole/hgHTlBn/tukog.pdfIn PDF document text
    • https://cdn.sqhk.co/bapisolel/athijaW/pimuditidoze.pdfIn PDF document text
    • http://clipshd.design/fafepanupujasidezapoqjb8f.pdfIn PDF document text
    • http://com-connexion.xyz/xozatolowezetonejegadimarwibd.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/julexekubaj/allstate_annuity_appointment_form.pdfIn PDF document text
    • https://s3.amazonaws.com/gagotaniwipure/55474774500.pdfIn PDF document text
    • https://s3.amazonaws.com/vexosafugunu/thesis_about_teaching_strategies_in_mathematics.pdfIn PDF document text
    • https://s3.amazonaws.com/jagux/how_to_use_accu_chek_fastclix_lancets.pdfIn PDF document text
    • https://s3.amazonaws.com/tibanepoxilibud/72807973756.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubifirigevi/wizard_citation_sewing_machine_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/neporezofov/replacement_handle_for_ge_spacemaker_xl1800_microwave.pdfIn PDF document text
    • https://s3.amazonaws.com/kavalukato/what_is_the_function_of_a_security_guard.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

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010120.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10120 5304 bytes
SHA-256: 46f7e634c00fba0810dd2569f6f684fbceb601552bc65bfd8451aada02ddb9ae
font_01_sfnt_off0001131e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1131E 11364 bytes
SHA-256: db4ad878354c013039fda1624367563246c32584f5a1a10734fe416a15f99756

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