Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fb017ff4d541c92…

MALICIOUS

PDF

70.0 KB Created: 2021-02-24 11:47:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 5bb0143a124a576fdc87d3c9b1bfff6e SHA-1: 1c7cdd376d0fda38686d4498c864e9e9485e7eb4 SHA-256: 0fb017ff4d541c92c5c9cfcea2702890863b7132c842ac662be755d97dfd8610
184 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
  • 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=husqvarna+manual+book In PDF document text
    • http://bossyonlinex.com/badlapur_songs_free_320kbps_songs._pkcuoni.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476567/normal_5ff2f5914a7aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465128/normal_6010a7254d190.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388156/normal_60072496b02cc.pdfIn PDF document text
    • http://nubidatum.22web.org/the_missing_cast_members.pdfIn PDF document text
    • http://berkeciftci.net/presonus_studiolive_ar16_usb_bedienungsanleitung_deutschhqil9.pdfIn PDF document text
    • https://zogudoweno.weebly.com/uploads/1/3/1/6/131637773/tenup.pdfIn PDF document text
    • https://limofagis.weebly.com/uploads/1/3/4/6/134640762/pidibasagawi_wodukim.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384035/normal_601065be1c655.pdfIn PDF document text
    • http://wokulorumal.iblogger.org/bogie_de_train.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374968/normal_6017beac53fa7.pdfIn PDF document text
    • http://pubguckazan.com/609878261641u4x5.pdfIn PDF document text
    • http://philonio.online/vametavipeytnsw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390383/normal_600457f3bfc96.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378383/normal_5fda016c4bc78.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://lezujepadu.rf.gd/the_rock_video_song.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c9a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9A0 4816 bytes
SHA-256: 94924d2422f27387eb5354e841627cf98f95001bfc9e5bc0e56f1ab814983110
font_01_sfnt_off0000d9d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9D6 10384 bytes
SHA-256: cdc548adf539e4f982147da8f50345d8cdc8abd414df4b28d92a954e230d9c8c
font_02_sfnt_off0000fd3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD3B 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333