Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d89cfb318826658…

MALICIOUS

PDF

71.4 KB Created: 2021-02-14 02:59:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 2042f7b370514337015391797002f094 SHA-1: 6a12fbb7de01651a1b1ebdb02652840052aa16d2 SHA-256: 0d89cfb31882665896a6d2ea3142b5eca109fefa3ace97a3115ee8f00acf2056
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=misbehaving+pdf+free In PDF document text
    • https://cdn.sqhk.co/bulunazi/idhahj6/64022914978.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379968/normal_5fcb9d2f504f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488336/normal_5fd622e139486.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451955/normal_5fd64f80ddf10.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://nosatezugizixi.epizy.com/13043208939.pdfIn PDF document text
    • http://parezorizujax.rf.gd/zimitinugemiwufa.pdfIn PDF document text
    • http://ruvaseravijuged.rf.gd/brindisi_report_incidente_oggi.pdfIn PDF document text
    • http://jatujij.rf.gd/bibidonodavowe.pdfIn PDF document text
    • http://bidetorula.rf.gd/the_crucible_act_3_movie_study_guide.pdfIn PDF document text
    • http://gasanilu.epizy.com/ninuvebexotavowe.pdfIn PDF document text
    • http://bejuzijufure.rf.gd/tugatirapenupaminikuget.pdfIn PDF document text
    • http://nerusejide.rf.gd/mechanism_of_labour_in_breech_presentation.pdfIn PDF document text
    • http://kijaripejugap.epizy.com/fimoragovalofizusunekeg.pdfIn PDF document text
    • http://rasezufolob.rf.gd/farming_simulator_19_chickens_guide.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_off0000d0a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0A1 5076 bytes
SHA-256: f1de9b6e5e92553601b8e70d365e64007ab78d9e1481f077e45afdd47c45617d
font_01_sfnt_off0000e1cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1CB 9264 bytes
SHA-256: 344c0c3aa522d9c3c7bf1181098dce09d32a272fce4f5c100c3f103a68f5c70d
font_02_sfnt_off0001017d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1017D 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34