Malicious PDF — malware analysis report

Static analysis result for SHA-256 75da9a96683e248a…

MALICIOUS

PDF

80.5 KB Created: 2021-02-26 18:47:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 2c9e7da2163d0ed03b22e7b2fc8120f6 SHA-1: 27d82833d1c7e66d9e666191707db3bce6642e9f SHA-256: 75da9a96683e248a8a84b2c2c3745f8c5eae25189308f505926fd317f8ad301d
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by multiple heuristics, including a machine learning model and ClamAV, indicating malicious intent. It contains numerous embedded URLs, many pointing to disposable hosting, and one specific URL is presented as a 'pet sematary 2 soundtrack download' lure. The presence of external URIs and a link farm structure suggests the document is designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://leonvi.ru/123?utm_term=pet+sematary+2+soundtrack+download PDF link annotation
    • http://repair-foto.ru/vigozotofuzogwnc4p.pdfIn PDF document text
    • http://barajofa.mywebcommunity.org/22244798516.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466680/normal_5ff83c8cc2196.pdfIn PDF document text
    • http://tipofeliluget.medianewsonline.com/how_to_use_texas_instruments_ti-30xa.pdfIn PDF document text
    • http://wei-nmvc.com/circuito_eletrico_e_seus_elementosaeb62.pdfIn PDF document text
    • http://komaxinatobofe.medianewsonline.com/45774795357.pdfIn PDF document text
    • http://fepaporipevari.mypressonline.com/how_to_change_google_maps_fastest_route.pdfIn PDF document text
    • http://davupopebuwiser.sportsontheweb.net/11281313220.pdfIn PDF document text
    • http://zogometemo.sportsontheweb.net/how_to_bend_pipe_by_hand.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482020/normal_5fd2636fc8f82.pdfIn PDF document text
    • http://skidki-day.site/resefelemubemakuzop4h4bd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489976/normal_5fe5d5607f9b5.pdfIn PDF document text
    • http://lumobumekola.getenjoyment.net/chapter_1_encounters_and_foundations_to_1800_answers.pdfIn PDF document text
    • http://idealica-italiaofficial.site/is_the_nasm_exam_open_book5kiay.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488842/normal_60067a4865d9d.pdfIn PDF document text
    • http://lovelyhouse.online/brother_p_touch_label_maker_manual_pt-1750f99jq.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/kijelopazekune/bokuzu.pdfIn PDF document text
    • http://mukanebesiva.atwebpages.com/60808492726.pdfIn PDF document text
    • http://tososite.onlinewebshop.net/nafobinubepunata.pdfIn PDF document text
    • https://s3.amazonaws.com/vuforewebub/begutowununafoneru.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_off0000f8bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8BD 5476 bytes
SHA-256: 5978d79f78933f0f2cd34a4f832fd2337935a11a3f67acf0949bf6cf7a67c724
font_01_sfnt_off00010b5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B5F 12528 bytes
SHA-256: 5e0980251e3cb43a485d1c74ea6e80b7c1b7ce47d474c10015b582b322afead1

Open this report in the interactive analyzer, or submit your own file for analysis.