Malicious PDF — malware analysis report

Static analysis result for SHA-256 a655729a993d8eda…

MALICIOUS

PDF

72.6 KB Created: 2021-02-22 15:19:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 814c605b31d1bd1c8cda5188259defa5 SHA-1: 65a94b314ef4912ccf5a5a8862db2947921230a1 SHA-256: a655729a993d8edafb6615de046e4384b9c7d588e4960d15bbe3f9c87170637b
244 Risk Score

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/123?utm_term=baby+einstein+neighborhood+symphony+activity+jumper+nz In PDF document text
    • https://divevuke.weebly.com/uploads/1/3/3/9/133999966/14f1e5.pdfIn PDF document text
    • https://cdn.sqhk.co/vawupemowa/hgiARih/warcraft_game_playing_cards.pdfIn PDF document text
    • https://cdn.sqhk.co/jisaside/ehftk4m/webanevoz.pdfIn PDF document text
    • https://cdn.sqhk.co/wujakegu/dUc08jd/gmod_games_to_play.pdfIn PDF document text
    • http://realnoe-obshenie.online/love_yourself_highlight_reel_piano_sheet_musicltsh6.pdfIn PDF document text
    • http://megantv.site/fubuwunen4tdrk.pdfIn PDF document text
    • https://cdn.sqhk.co/kebokeregim/qTKWjfP/direfuguvedepaguj.pdfIn PDF document text
    • https://tiwebusimevadeb.weebly.com/uploads/1/3/5/3/135346158/dobopamof_nomux.pdfIn PDF document text
    • http://help-ruleviolation.com/hair_loss_black_bookm9m5b.pdfIn PDF document text
    • https://cdn.sqhk.co/latusetime/e2ib93X/mobile_application_manager_definition.pdfIn PDF document text
    • https://welomutulek.weebly.com/uploads/1/3/4/8/134873792/kerirufarudutuw.pdfIn PDF document text
    • http://itfamily.pro/ben_10_zamana_kar_yar_filmini_izle_trke_dublaj_izleygic9.pdfIn PDF document text
    • https://berajodisi.weebly.com/uploads/1/3/4/6/134651265/1278fc3744868b.pdfIn PDF document text
    • https://cdn.sqhk.co/xuzuvazol/9xbjegj/likert_scale_options_frequency.pdfIn PDF document text
    • https://cdn.sqhk.co/lebapivi/dwtBbNX/road_rage_car_shooting_jailed.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d854.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD854 5932 bytes
SHA-256: 84ff2865f66eee2bf231f7cf4b3358385bf895d7da6ed942a54a925d51d267dc
font_01_sfnt_off0000ec6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC6D 12252 bytes
SHA-256: 0034cf36498b77057e334052e127b01944af1d5b470321d7a5bbd1d175d72077

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