Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5021dd89dcf44ca…

MALICIOUS

PDF

72.0 KB Created: 2021-02-15 01:10:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 8727d147aa7c90c0b0c7a40285ae75c3 SHA-1: 2dabd99d0b447d055f76adc203f2e256cfe19bd9 SHA-256: f5021dd89dcf44ca7d11822346e245bb5dec8a6d655093339b7f404aa744cc06
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jacksth.ru/123?utm_term=what+to+do+with+a+bath+bomb PDF link annotation
    • https://fadefewili.weebly.com/uploads/1/3/4/3/134316521/37d2b9169dc3c0.pdfIn PDF document text
    • http://kosolibanun.iblogger.org/adobe_sign_for_outlook.pdfIn PDF document text
    • http://doxugivo.22web.org/29076768282.pdfIn PDF document text
    • https://cdn.sqhk.co/ketejeti/heaygiF/50905414231.pdfIn PDF document text
    • https://webuseki.weebly.com/uploads/1/3/2/8/132814302/liritujo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471240/normal_5fe2d8d0f3072.pdfIn PDF document text
    • https://zemaxixose.weebly.com/uploads/1/3/4/6/134636511/580842.pdfIn PDF document text
    • https://cdn.sqhk.co/xijisejes/ihgrndf/rokezefagabigu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367914/normal_60236b78d7392.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/geraromu/61184083540.pdfIn PDF document text
    • http://sosesejuwukoga.epizy.com/pc_building_simulator_steam_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/dopugaxelelema/29932807997.pdfIn PDF document text
    • http://zukowuneze.rf.gd/facebook_mod_apk_no_ads.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/dufifeguduv.pdfIn PDF document text
    • https://s3.amazonaws.com/wovisak/76024718710.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_off0000df22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF22 5004 bytes
SHA-256: d4a35d2d6906f8a08f7a45c3a455db6d31cc90f9ba0cd5d51071c6cd0ecc1d40
font_01_sfnt_off0000f019.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF019 10340 bytes
SHA-256: be64f7185d2cac34f6e1318df3a49be2029c3c33b12d91587dea8f6a78a3b5b8