Malicious PDF — malware analysis report

Static analysis result for SHA-256 36aa7d77ae5fe62d…

MALICIOUS

PDF

78.9 KB Created: 2021-02-17 07:42:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 5ac78df4edb9fbf8a5070e5ebd88ddec SHA-1: 6649624a31eff5d20572ff5b311b5c02aedea3df SHA-256: 36aa7d77ae5fe62d164f57a90ec79785bfeaf596b39424956bf8a535fb16b7c7
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://bologen.ru/wb?keyword=weber%20grill%20seasoning%20cast%20iron%20grates PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4490950/normal_602a3795cefb6.pdfIn PDF document text
    • https://linabodaku.weebly.com/uploads/1/3/1/1/131164293/wudosezudali-pafiw-linojaw-texatupisadu.pdfIn PDF document text
    • https://cdn.sqhk.co/vulovosovem/haYW7gc/71765802329.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421944/normal_5fec48e896e60.pdfIn PDF document text
    • https://lumezoti.weebly.com/uploads/1/3/4/8/134863392/kewasigere.pdfIn PDF document text
    • http://dewobazul.22web.org/context_clues_worksheets_for_grade_9.pdfIn PDF document text
    • https://cdn.sqhk.co/rivotoxupow/zTjfhbf/34296790632.pdfIn PDF document text
    • https://cdn.sqhk.co/bipuzojafa/S7hiYmu/muxufotekufewebegi.pdfIn PDF document text
    • https://tatelemu.weebly.com/uploads/1/3/1/1/131164239/6bc51aec9fd.pdfIn PDF document text
    • https://cdn.sqhk.co/savunowudob/gehahiP/runigepugebe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467017/normal_5fec3ffa6bd38.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476285/normal_5fede67635425.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lawupoxag.epizy.com/81070257814.pdfIn PDF document text
    • https://s3.amazonaws.com/vapite/assassin_s_creed_3_liberation_ps_vita.pdfIn PDF document text
    • https://s3.amazonaws.com/dibedamoka/relesabalinipemekugubuw.pdfIn PDF document text
    • http://rawobebisef.epizy.com/how_to_use_hand_pallet_truck.pdfIn PDF document text
    • http://datavofunuta.epizy.com/38356981823.pdfIn PDF document text
    • http://jigufabusu.epizy.com/android_broadcast_receiver_custom_permission.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_off0000f9c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9C1 5120 bytes
SHA-256: 58e11dda3620f2e2623bd38240ce689d1f0a247041ae8e38e8d300133af14735
font_01_sfnt_off00010b4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B4C 10264 bytes
SHA-256: 1273da667e5916ce7590bbfbbbe67cd52465c34c05a77e7c13c76cbd34c11d1b