Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c65b86d459cff29…

MALICIOUS

PDF

69.6 KB Created: 2021-02-22 20:27:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: fb7a5e8600e7173b3b9d05a89677ce54 SHA-1: b0046d9f09bde582fd12ab59e0a9ec9e42f3c819 SHA-256: 3c65b86d459cff29063186a86792323fcd472c5f66453772abfa5f886bfca3a8
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=rpg+skills+datapack In PDF document text
    • http://tvoeobrazovanie.fun/587664348737fwc.pdfIn PDF document text
    • http://kozizukexepuf.22web.org/black_ish_full_episodes_free.pdfIn PDF document text
    • http://grigolia-studio.ru/acls_guidelines_aha_20106tsq9.pdfIn PDF document text
    • http://fitokaps.xyz/xedoxdcz5n.pdfIn PDF document text
    • https://dimalosuzilem.weebly.com/uploads/1/3/1/4/131452887/bijifameveweb-tuzanawutuganaw-bibigesilekasag-fomafejunaviw.pdfIn PDF document text
    • https://mipurokuniveg.weebly.com/uploads/1/3/4/5/134508865/9112578.pdfIn PDF document text
    • http://dimebajurebed.22web.org/how_long_is_a_diono_radian_rxt_good_for.pdfIn PDF document text
    • https://wegenagozej.weebly.com/uploads/1/3/5/3/135394478/8066232.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446388/normal_5ff69241cf79d.pdfIn PDF document text
    • https://valezuxaj.weebly.com/uploads/1/3/4/6/134650604/nipipesazuj_dopazovef_lopipotovilagi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388428/normal_5fdb72dac9e0c.pdfIn PDF document text
    • https://zuwuroxiver.weebly.com/uploads/1/3/1/0/131070979/jugodaxi_worivazoku.pdfIn PDF document text
    • https://pesiwuveso.weebly.com/uploads/1/3/5/3/135392822/porijo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://popewap.epizy.com/manual_da_camera_nikon_d3200.pdfIn PDF document text
    • http://dizodufuxot.rf.gd/29681956939.pdfIn PDF document text
    • http://zifiwek.rf.gd/kazixe.pdfIn PDF document text
    • http://xizabefozuk.rf.gd/barnsley_council_application_form.pdfIn PDF document text
    • http://pukadevimetuz.rf.gd/windows_10_1903_administrative_templates.pdfIn PDF document text
    • http://lafeseg.rf.gd/47510996645.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_off0000d3fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3FD 5216 bytes
SHA-256: 55aafb706fb13da50861293f39ee3185f77048baa219e1b9bef8b4bb01ce0426
font_01_sfnt_off0000e5de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5DE 10228 bytes
SHA-256: 2810dc3a86f621aeaf36f18457ed38d4c9e0b0584a262689d4b23a7422564aa9