Malicious PDF — malware analysis report

Static analysis result for SHA-256 327fc1be842c17e2…

MALICIOUS

PDF

68.8 KB Created: 2021-01-27 05:56:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: aa9bab4ab48b16a082544e69782f426b SHA-1: 580ae8354c338cc6bc9710642b4f1b5f7553e60b SHA-256: 327fc1be842c17e2edf214c643bb2116e068a225692c6238a662ad7e9845b734
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://bologen.ru/wb?keyword=senior%20mechanical%20engineer%20salary%20michigan PDF link annotation
    • http://daddytestit.xyz/83976061083ebii1.pdfIn PDF document text
    • https://patewowuxafopon.weebly.com/uploads/1/3/4/5/134595548/larozemuzozajezejub.pdfIn PDF document text
    • https://cdn.sqhk.co/tigixexaxi/cijggqi/superzings_hero_truck_monster_roller.pdfIn PDF document text
    • http://nasporte1.fun/lavelefowafukisirpnx4.pdfIn PDF document text
    • https://cdn.sqhk.co/nedupugifuka/Ojf1ULu/zenojufupumowijizet.pdfIn PDF document text
    • https://jezuvafu.weebly.com/uploads/1/3/5/3/135348480/deganodetixebutekepu.pdfIn PDF document text
    • https://wemupubipu.weebly.com/uploads/1/3/5/3/135331653/4691d4b869.pdfIn PDF document text
    • https://bemisawu.weebly.com/uploads/1/3/4/7/134716701/5347270.pdfIn PDF document text
    • https://cdn.sqhk.co/podizapexiv/gsBiezb/zuremitefabo.pdfIn PDF document text
    • https://dumetokewip.weebly.com/uploads/1/3/4/3/134394823/lotur.pdfIn PDF document text
    • https://judadumoxa.weebly.com/uploads/1/3/4/7/134718892/mutixozewilepi.pdfIn PDF document text
    • http://rent-nout.site/planet_fitness_coming_to_mason_city_iowayg4iu.pdfIn PDF document text
    • https://febumade.weebly.com/uploads/1/3/4/7/134757335/nudurokizum_vevazekorenifu.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/wonumafubij/kumpulan_game_arcade_mod_apk_offline.pdfIn PDF document text
    • https://s3.amazonaws.com/lunojol/liditode.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_off0000cfb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFB0 5416 bytes
SHA-256: aa7d6b7226877ffe3a351a86d415e1740a1d346585cc0309bc61d71dc9a89100
font_01_sfnt_off0000e1f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1F7 10660 bytes
SHA-256: 6bd393f1fb32aa391ca770a3ed69d0282abd6943567fb7dd18363b88bbd73f07