Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f62591968a6e0c0…

MALICIOUS

PDF

66.3 KB Created: 2021-02-25 10:53:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 412b90b4ad1b0fe8b1beb3dce9eb6617 SHA-1: d6b4a69508e8dbdc6006f51a436fff79c0a62e45 SHA-256: 0f62591968a6e0c0ad30d3fa21100851317f651d13936e4aa74eab0e3c63117e
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/award?keyword=all+souls+cemetery+long+beach+ca+staff In PDF document text
    • http://gekifek.scienceontheweb.net/what_is_a_functional_analysis_in_engineering.pdfIn PDF document text
    • https://cdn.sqhk.co/bomemenun/a6gdhai/fitness_training_for_skiing.pdfIn PDF document text
    • http://betijeduw.getenjoyment.net/konosuba_light_novel_english.pdfIn PDF document text
    • https://cdn.sqhk.co/jagugide/UYkgegc/72148370739.pdfIn PDF document text
    • http://dipufuvolog.iblogger.org/nietzsche_gay_science_summary.pdfIn PDF document text
    • https://cdn.sqhk.co/voxedifi/4hcgdjg/62348004421.pdfIn PDF document text
    • http://tulomodev.getenjoyment.net/gexel.pdfIn PDF document text
    • http://palikexifumalam.mywebcommunity.org/vadixibojob.pdfIn PDF document text
    • http://juwupexutaval.mywebcommunity.org/triangles_3_exterior_angles_worksheet_answer_key.pdfIn PDF document text
    • http://mitutepoka.medianewsonline.com/dipozaravovasegunox.pdfIn PDF document text
    • http://saxobupazes.sportsontheweb.net/28917051320.pdfIn PDF document text
    • http://jaralet.getenjoyment.net/kigujukej.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://duvodix.myartsonline.com/percy_jackson_sea_of_monsters_chapter_12_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/mexesazaxasa/12645668268.pdfIn PDF document text
    • http://wusepobokajed.rf.gd/kalvisolai_12_answer_key.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_off0000c5f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5F5 5524 bytes
SHA-256: 2b2fa65e57f3f9db03b0e50ae6bc86c2d7c10a5fbddac35709426d19f027e54c
font_01_sfnt_off0000d8a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8A3 10404 bytes
SHA-256: 40a9e5116d34e6edf6c390fcaabada2ee4c249653de012716b19b5413f6e15f3