Malicious PDF — malware analysis report

Static analysis result for SHA-256 02f2c242524788f6…

MALICIOUS

PDF

71.9 KB Created: 2021-04-17 18:09:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 2b7ca15cd6675857e1a8925deda2932e SHA-1: 8c1bd1da19d23629367b1b29fe2203da63eda76c SHA-256: 02f2c242524788f6df0e9b41ae7002f67792b69e46cac92f777606bf81039a1b
184 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to disposable hosting and redirector infrastructure, indicating a phishing or malicious redirection attempt. Heuristics confirm the presence of malicious redirector links and a link farm on disposable hosting. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://dafemum.ru/strik?utm_term=what+is+8ps+of+marketing In PDF document text
    • http://gunofixe.medianewsonline.com/5004420528.pdfIn PDF document text
    • http://pifedalune.medianewsonline.com/benim_hocam_maliye_video_ders_notlar.pdfIn PDF document text
    • http://wojisub.mypressonline.com/carol_of_the_bells_piano_easy.pdfIn PDF document text
    • https://kumajevebak.weebly.com/uploads/1/3/1/8/131856027/1ed6d.pdfIn PDF document text
    • http://maxobujixeweden.sportsontheweb.net/species_aggregate.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376619/normal_60046b11bb387.pdfIn PDF document text
    • https://taxubixud.weebly.com/uploads/1/3/4/7/134760406/mebuvabug-situxap.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402519/normal_606b4ebc66ed9.pdfIn PDF document text
    • https://tubivafidet.weebly.com/uploads/1/3/4/8/134886435/7792077.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375509/normal_5ff784c9d6c2c.pdfIn PDF document text
    • https://xifuvago.weebly.com/uploads/1/3/0/8/130813557/3401026.pdfIn PDF document text
    • http://xexapitanegis.getenjoyment.net/islamic_banking_system_in_bangladesh.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368505/normal_5fd976488bba6.pdfIn PDF document text
    • http://lusuwivaw.medianewsonline.com/benedictionale_romanum.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nononulavojiki.myartsonline.com/38247993066.pdfIn PDF document text
    • https://s3.amazonaws.com/votuweroxigezog/twilight_breaking_dawn_2_soundtrack_list.pdfIn PDF document text
    • https://s3.amazonaws.com/xarojapi/tableau_free_online_training_videos.pdfIn PDF document text
    • https://s3.amazonaws.com/lukepepe/how_to_use_maschine_mikro_mk2_with_logic.pdfIn PDF document text
    • http://dirulibas.onlinewebshop.net/x_core_hunter_sprinkler_system_manual.pdfIn PDF document text
    • http://fojosotum.myartsonline.com/latin_phrases_in_criminal_law.pdfIn PDF document text
    • http://sasaxunofob.atwebpages.com/danumazifof.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_off0000d9da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9DA 5556 bytes
SHA-256: 2e8926ea424d21e0d08a452c39fa20b9a5361d71f0668f57b3f6f54dde89351c
font_01_sfnt_off0000eca5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECA5 11060 bytes
SHA-256: d3b2d6c201da9a92ba5048cfd7971b2173cd41a2faefa621fd943201a10bf55e

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