Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cfa89ffb76c52a4…

MALICIOUS

PDF

83.1 KB Created: 2021-03-06 02:05:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 41fc38fa54c4bae858e449e4571c74aa SHA-1: f96f41f0e9fecd69a86deec7f21c8c2e461485d9 SHA-256: 5cfa89ffb76c52a4283af1e141eb3796d6e7f120ac6169b3631704117460456e
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://gimoguvi.ru/award?keyword=volume+of+cone+worksheet+grade+6 PDF link annotation
    • http://drenajkrasnodar.ru/fuwasotaxebujw0yz.pdfIn PDF document text
    • https://cdn.sqhk.co/zenipijujate/6rgejiq/gardenscapes_level_5755.pdfIn PDF document text
    • http://medicinfo.online/36315659619ni7je.pdfIn PDF document text
    • https://cdn.sqhk.co/sofizagumup/jaVwjfX/can_boomer_get_in_cars_far_cry.pdfIn PDF document text
    • http://sberpodarok2020.online/53235777940do1qz.pdfIn PDF document text
    • https://cdn.sqhk.co/dewufidabo/ew2GOBL/54259427108.pdfIn PDF document text
    • https://cdn.sqhk.co/jedugifaxido/atTZMjd/getovetipegexid.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496605/normal_5ff7c41509c93.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409256/normal_600ea6c6a8e01.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443344/normal_6027da02650f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493227/normal_60394864db5a6.pdfIn PDF document text
    • http://edarudost.online/95719154128v2dsu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494435/normal_6013ebea12362.pdfIn PDF document text
    • https://cdn.sqhk.co/bujasugawo/ifDvhh1/cyberpunk_2077_camera_filter.pdfIn PDF document text
    • https://cdn.sqhk.co/suxavawudomo/sjhfggm/deniru.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4504554/normal_602f1b3c89210.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nowibitiki.epizy.com/building_information_modelling_course_melbourne.pdfIn PDF document text
    • http://vegidegeje.rf.gd/nikowu.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_off000107ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107BA 5708 bytes
SHA-256: 8720759eee11834bf78bac4d35b7f88f1100a16f80753a968d038ae19494c21e
font_01_sfnt_off00011b1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B1E 10632 bytes
SHA-256: 4279f63886310a0d09f81557c85841646656eca6df64212275b223d4b3587798