Malicious PDF — malware analysis report

Static analysis result for SHA-256 17bfafe16cf0de65…

MALICIOUS

PDF

65.4 KB Created: 2021-02-19 08:09:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 0d1d78f49ec709ce77b48f3b5cced3cf SHA-1: a259d2683efe31e5c300fcacdb2fdbd727a9012b SHA-256: 17bfafe16cf0de659bb24fcc4f97b498522284739316bc42c8d240b0fd8e1235
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://baarspo.ru/123?utm_term=livro+the+ultimate+sniper+pdf PDF link annotation
    • https://raduwefun.weebly.com/uploads/1/3/1/1/131164260/nezifepudugav_kagovawa.pdfIn PDF document text
    • https://cdn.sqhk.co/tororukiwuri/d3ibl9i/fewubu.pdfIn PDF document text
    • https://cdn.sqhk.co/mogizufofuj/jwZiUaz/53791974159.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413714/normal_5fc6303fd9f42.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501042/normal_5ffb50980fad0.pdfIn PDF document text
    • https://sizamuvexiluti.weebly.com/uploads/1/3/4/6/134644091/bd2d6a.pdfIn PDF document text
    • https://cdn.sqhk.co/gemesikexo/jaraPif/raask_short_video_apps.pdfIn PDF document text
    • https://nevozijefase.weebly.com/uploads/1/3/4/7/134748823/7cedf04511df91.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445573/normal_6026871dbc9e8.pdfIn PDF document text
    • https://cdn.sqhk.co/gibewuzavi/lFG7iib/unicorn_dash_magical_sky_game_download.pdfIn PDF document text
    • http://jinokawobusuzi.iblogger.org/posakemirolopakakesanu.pdfIn PDF document text
    • http://sevotapapi.22web.org/organisational_learning_needs_analysis_template.pdfIn PDF document text
    • https://cdn.sqhk.co/nowavutu/iJjdhbk/rope_cut_game_download.pdfIn PDF document text
    • https://pozimifekof.weebly.com/uploads/1/3/4/6/134674510/jemakox_mazixafaju_didalovu.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/jivamubug/new_bus_simulator_games.pdfIn PDF document text
    • https://s3.amazonaws.com/sisaxu/batman_logo_pixel_art_template.pdfIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/2648535974.pdfIn PDF document text
    • https://s3.amazonaws.com/xunilukegez/us_navy_uniform_regulations_all_weather_coat.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_off0000c2d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2D8 5284 bytes
SHA-256: 222c9a3d9dbf470a600cd882f0804c66cf93559428282bdd1fbc677774e6b862
font_01_sfnt_off0000d4ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4AC 10896 bytes
SHA-256: 84836c6ef132c5a49ff5cbe291566f6a9e25972bd035864cb37858a166acc498

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