Malicious PDF — malware analysis report

Static analysis result for SHA-256 f93856929a260b02…

MALICIOUS

PDF

72.8 KB Created: 2021-02-21 12:42:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 2857d8c4e9d680ab5754392ffaa05c28 SHA-1: 36d740a520e354761e0b6e809ead8a1513151246 SHA-256: f93856929a260b02cd2c86ac4cc83984b1f84c289169130992ec846e21bc72f4
244 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
  • 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 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.
  • 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=all+clad+7+qt+slow+cooker+manual In PDF document text
    • https://xuxufidumexed.weebly.com/uploads/1/3/2/6/132681394/jazoki.pdfIn PDF document text
    • https://nesipemuwazona.weebly.com/uploads/1/3/4/8/134881126/fitadosubej.pdfIn PDF document text
    • https://kuzeloxowew.weebly.com/uploads/1/3/4/3/134330257/53d0beb.pdfIn PDF document text
    • https://tujozidu.weebly.com/uploads/1/3/4/6/134694944/5644577.pdfIn PDF document text
    • http://detonic-romania.website/hyper_aadi_skits_downloadxod44.pdfIn PDF document text
    • https://falesejus.weebly.com/uploads/1/3/1/4/131483218/gedonepaboruzekizela.pdfIn PDF document text
    • http://kogutipabu.22web.org/love_song_in_winter_sheet_music.pdfIn PDF document text
    • http://goxuvux.22web.org/miui_themes_app_for_android.pdfIn PDF document text
    • http://reactivaperu-viabcpi.com/jogazobonopuwipugiribegno8uc.pdfIn PDF document text
    • http://zolidunepojew.iblogger.org/niledidekejupe.pdfIn PDF document text
    • http://copriyghtconfirmed.com/xogexulepixegmrbx4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rigirulame.epizy.com/xejajalurujoburejifokivu.pdfIn PDF document text
    • http://zapuvem.epizy.com/voluntary_acknowledgement_of_paternity_form_south_carolina.pdfIn PDF document text
    • http://xewojof.rf.gd/warulepuxomejofilu.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_off0000e058.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE058 5436 bytes
SHA-256: d5cb1977e3bfca0dfe46a4055640436d65191b018f98c3dbb82d8b7b5345f6bf
font_01_sfnt_off0000f2d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2D8 10296 bytes
SHA-256: 1cd9b9d38308f16f76c3b425c4b03e1a9a79e00ed41024f00b021bbd318425a0