Malicious PDF — malware analysis report

Static analysis result for SHA-256 e664f7693c678eb4…

MALICIOUS

PDF

70.4 KB Created: 2021-01-20 22:54:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 3d278b3a909e47ec5715779854e88e72 SHA-1: 50123789bdf8568cae16019df224062ee069b901 SHA-256: e664f7693c678eb4bf3b5515a2ab2016d7c1f0d523cf64c7cb03d5cce05cafa9
196 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://jacksth.ru/aws?utm_term=coleman+kerosene+lantern+manual PDF link annotation
    • https://livugazenexaru.weebly.com/uploads/1/3/1/6/131607095/2882677.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444357/normal_5fa2f29fe41b2.pdfIn PDF document text
    • https://cdn.sqhk.co/wenegifuteg/CjfDXgd/perfect_apple_slices.pdfIn PDF document text
    • https://cdn.sqhk.co/kezixowog/2jeifdU/munabekojuzakekubeket.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404488/normal_5ff039ace7f84.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455406/normal_5fc2ee355b850.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419003/normal_5f9be3106930f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466996/normal_5fbd826c74733.pdfIn PDF document text
    • https://jigotofobab.weebly.com/uploads/1/3/5/3/135300724/8b51c3ee6983.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://balazetesu.epizy.com/funding_proposal_template_south_africa.pdfIn PDF document text
    • http://vemevusakeke.epizy.com/peloxe.pdfIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/bulb_smash_game_mod_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/smart-_ups_rt_5000_xl_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/bomupi/80497814653.pdfIn PDF document text
    • https://s3.amazonaws.com/zarelusipofox/bekojoxubupefojetexuvi.pdfIn PDF document text
    • http://vofiwevo.epizy.com/guiders_academy_placements.pdfIn PDF document text
    • http://gonoluripep.rf.gd/wukalalogaxisowoli.pdfIn PDF document text
    • https://s3.amazonaws.com/dozore/broadsheet_brisbane_coffee.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_off0000d726.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD726 4800 bytes
SHA-256: e031d6a8800e6afc83e8c604bf2cf3ba259a9956551650d9d55851c11022ca99
font_01_sfnt_off0000e751.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE751 11140 bytes
SHA-256: 9ccdb2e6488cf8f229de92a3661ef57642849f5d916c4c9423d3398c0cb302a2