Malicious PDF — malware analysis report

Static analysis result for SHA-256 64e5328d9901438f…

MALICIOUS

PDF

89.5 KB Created: 2021-04-06 15:47:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 05a5c117f9b5eb06efde309063338ef4 SHA-1: be53782c0665d9afe7139b2380f0da545422bb02 SHA-256: 64e5328d9901438f9e24a199806fa42a8bacbb403db847d32c0262fdb05df765
186 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, a technique commonly used to redirect users to malicious websites for phishing or to download further malware. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and numerous external URIs suggest it's designed to lure users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://pelibifir.ru/123?utm_term=data+science+projects+with+python+pdf PDF link annotation
    • https://cdn.sqhk.co/rifokinimito/ibjegcR/ghosts_of_mars_2001.pdfIn PDF document text
    • http://teachersaid.fun/nulovixizipzkpha.pdfIn PDF document text
    • https://nivuvibopaxaji.weebly.com/uploads/1/3/4/5/134588818/4357361.pdfIn PDF document text
    • https://cdn.sqhk.co/kototokim/xjdEthj/tower_defense_games_cursed_treasure_2.pdfIn PDF document text
    • https://cdn.sqhk.co/vasegodesazu/hdl8jhW/blazetv_sign_in.pdfIn PDF document text
    • https://memuvarava.weebly.com/uploads/1/3/1/3/131384606/valebazanajuxi.pdfIn PDF document text
    • https://cdn.sqhk.co/xonipavu/fyielxF/brawl_stars_free_gems_hack_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/gevolonovare/MijgdHh/free_streaming_sports_sites_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/ronelejibir/jjjdZHi/45719612164.pdfIn PDF document text
    • https://xuxuratedagofat.weebly.com/uploads/1/3/4/6/134644764/nusokejadipulo-fanekobituvadaj.pdfIn PDF document text
    • https://cdn.sqhk.co/jagakutojut/bXhghep/80022014927.pdfIn PDF document text
    • https://cdn.sqhk.co/kaxovugefulo/uT9iigf/tikava.pdfIn PDF document text
    • http://lianhua.life/beginning_c_through_game_programming_fourth_edition2b9e5.pdfIn PDF document text
    • https://cdn.sqhk.co/xusopusavo/Svww8id/59533669112.pdfIn PDF document text
    • http://istra-backwater.ru/wejolodegalidadunopebagud5xyt.pdfIn PDF document text
    • http://hardcreditcheck.info/fateru3qbq4.pdfIn PDF document text
    • http://gratoram.site/filurimedigizikilabuzid2vdp5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://rofuvawitarul.atwebpages.com/beatitudes_list.pdfIn PDF document text
    • http://vafitinupisojud.onlinewebshop.net/englisch_aufgaben_zeiten.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010ccb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CCB 5268 bytes
SHA-256: 47f472fd82cc32908eff79b6f18dc9a156ff3a5c1dbd0a2f84353fa161ba7c6c
font_01_sfnt_off00011ec0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EC0 13844 bytes
SHA-256: b563f91f1b0fe421a8e44eb78c2fdba395cfb5e4c7423ae35fe4847013ab440f
font_02_sfnt_off00014ab0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14AB0 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2