Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cf787586eed22cb…

MALICIOUS

PDF

70.1 KB Created: 2021-02-16 01:43:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 90178785ca75a54d03fdef8f9331420c SHA-1: a69c8aafcca964b25874f2e8be8ef898aa77f408 SHA-256: 4cf787586eed22cbd0cf35d900bcc0fb5f1020bb9823da2f0eea062dd0ec16fd
186 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
  • 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://seumenha.ru/wix?keyword=spt+evaporative+air+cooler+sf-612r+manual PDF link annotation
    • http://appless.space/gmail_contacts_to_androidm67xq.pdfIn PDF document text
    • https://tebobasuzojipol.weebly.com/uploads/1/3/1/4/131407082/3937075.pdfIn PDF document text
    • https://cdn.sqhk.co/vifekodilevi/eiTiggc/37515259000.pdfIn PDF document text
    • http://lngcliente.com/baby_boy_and_girl_imagesnrioq.pdfIn PDF document text
    • http://reduslimitalia-official.website/20420957116q06mm.pdfIn PDF document text
    • https://buporinedo.weebly.com/uploads/1/3/4/0/134041533/wodorigano-dafelogefe.pdfIn PDF document text
    • http://fastdonwload.space/the_unending_game_freejl2zi.pdfIn PDF document text
    • http://trelon.fun/webnovel_app_not_workingrurpo.pdfIn PDF document text
    • http://aviabileti.ru/behance_fonts_free3gkj7.pdfIn PDF document text
    • https://wudumimimi.weebly.com/uploads/1/3/4/3/134356267/2557423.pdfIn PDF document text
    • https://cdn.sqhk.co/dapubebireba/iaeijxQ/41712375539.pdfIn PDF document text
    • https://cdn.sqhk.co/nuvurero/YCjfjfs/idle_egg_tycoon_mod_apk_1._5._2.pdfIn PDF document text
    • https://cdn.sqhk.co/pobumepova/chcgeie/fantasy_name_generator_female_witch.pdfIn PDF document text
    • http://hangookoil.ru/duruxokukiwewo9rcp0.pdfIn PDF document text
    • https://cdn.sqhk.co/dolafita/jQ7Bgc6/fun_things_to_do_philly.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/xakajoziwibi/kusizewijoro.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_off0000d473.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD473 5692 bytes
SHA-256: a418fb332960a778872ec1307628d95d6c4e0f59a198b465e7b400de0312a872
font_01_sfnt_off0000e7dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7DD 10476 bytes
SHA-256: d3441162d3e9d23ff7888a9df641a5b6b8447c1c540ba73cd0e00c084721f936