Malicious PDF — malware analysis report

Static analysis result for SHA-256 5db2c552529b24c6…

MALICIOUS

PDF

75.4 KB Created: 2021-02-02 07:41:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-31
MD5: abb1a9071514aac3b81f0da55581dd69 SHA-1: c04308b0285475bec3376032a4ed5f62df4015f3 SHA-256: 5db2c552529b24c65324e785b48d8568565481f2c97b5ed3327c16846ed91db0
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://jacksth.ru/aws?utm_term=rupees+in+words+in+crystal+report PDF link annotation
    • http://pizidojokinesa.66ghz.com/73602303951.pdfIn PDF document text
    • https://cdn.sqhk.co/medujebukoma/ih5shiz/8494872975.pdfIn PDF document text
    • http://blaugrana.ru/norwegian_cruise_deals_december_2020a1enr.pdfIn PDF document text
    • https://cdn.sqhk.co/jitolado/6hjje8e/free_things_to_do_near_me_this_week.pdfIn PDF document text
    • https://mumizovis.weebly.com/uploads/1/3/4/3/134350635/pusirota-bafatolapoz-vuganamam.pdfIn PDF document text
    • https://cdn.sqhk.co/wogokodu/i1Bgegd/photo_finish_horse_racing_codes.pdfIn PDF document text
    • https://cdn.sqhk.co/lijusute/Igsicif/61923328006.pdfIn PDF document text
    • http://olipaka.xyz/nomaridurozohnql.pdfIn PDF document text
    • https://nipizizit.weebly.com/uploads/1/3/0/9/130969905/6289919.pdfIn PDF document text
    • https://cdn.sqhk.co/bubiwalifeda/gcijwRd/stairmaster_run_cube_surfing_games.pdfIn PDF document text
    • http://netewe8.xyz/vebakpxxkj.pdfIn PDF document text
    • https://cdn.sqhk.co/mawejoxejobe/hiVhV97/sumoxuvobupiguzawuj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vivimaga.epizy.com/fungi_online_lab_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/nutanigonu/pinkfong_baby_shark_remix.pdfIn PDF document text
    • https://s3.amazonaws.com/fifomi/game_bully_2018.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_off0000e65d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE65D 5268 bytes
SHA-256: d632804ca4068e3e4bc0697ceee66a08402b299238dd4a2067bb6f3fd54bb577
font_01_sfnt_off0000f86e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF86E 11752 bytes
SHA-256: 59ac70a6cac5d97e478ead56634c4e16970a70cb8a6af7f864cd27e50bdf85a7