Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffabde4e8e7ff74f…

MALICIOUS

PDF

68.5 KB Created: 2021-02-13 08:56:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 389716a66de8dbd00db95958a4ac2b45 SHA-1: 06c56954940b6754b894416d1b468d7439fb43a8 SHA-256: ffabde4e8e7ff74f5dd7a7ae8f6d15e368d0faad9f82fc129676046e46372d60
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://yafferge.ru/wix?keyword=animal+farm+comprehension+questions+and+answers+chapter+8 In PDF document text
    • http://dukovasupufe.iblogger.org/37690267111.pdfIn PDF document text
    • http://xogakijukutikep.22web.org/94541120695.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465249/normal_6017df867d921.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366050/normal_60160880c117d.pdfIn PDF document text
    • http://munupesifak.22web.org/ripaxozapisiv.pdfIn PDF document text
    • https://cdn.sqhk.co/bexamajuw/gjS4Lje/laxovitizafidobatu.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/jazuravazaguz/18745013583.pdfIn PDF document text
    • https://s3.amazonaws.com/waxegatulo/655558308.pdfIn PDF document text
    • https://s3.amazonaws.com/lowuwofuxali/zutafifumenumekax.pdfIn PDF document text
    • http://fivamoxopel.epizy.com/exam_az-_103_study_lab_guide.pdfIn PDF document text
    • http://navebulaj.epizy.com/formation_continue_administration_des_ventes.pdfIn PDF document text
    • http://bonanelokuweje.rf.gd/gopugol.pdfIn PDF document text
    • http://lurapuven.epizy.com/alice_in_chains_sheet_music_free.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/reading_comprehension_worksheets_6th_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/guvovigo/migarujigemav.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_off0000ce0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE0A 5796 bytes
SHA-256: a578d3f5ffa8bfc7577d19dd5b77df46b2c3f2aa0256bdc101b68138d0b2c7bc
font_01_sfnt_off0000e1a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1A8 10224 bytes
SHA-256: 93fd4d7b898d0a21cb203eac2cd9fddebec3a48407c182cfe00e544fe7db540a