Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa5a6a507101fab9…

MALICIOUS

PDF

74.0 KB Created: 2021-02-04 08:47:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: e9fdbe8c6da311429f2b54cc2d9e9ba6 SHA-1: 4dbc64e2e47d8513c604992c32dfd227d4e2dbff SHA-256: fa5a6a507101fab9e7af60717975beebefafe15b4ff90ce6ac0a67f15aff1b3b
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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=osrs+getting+lovakengj+favor PDF link annotation
    • https://cdn.sqhk.co/bozogekeji/pitjeBJ/balls_bricks_breaker_3_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/tazakabebilo/D7jgicH/playstation_5_pre_order_tracker.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481988/normal_60031e0857d13.pdfIn PDF document text
    • http://roflan.site/free_games_download_for_pc_windows_8idj2c.pdfIn PDF document text
    • http://theporte.xyz/business_regulatory_framework_mg_university7yf6c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452846/normal_5fcdf58410fcd.pdfIn PDF document text
    • https://cdn.sqhk.co/zimuteraf/JZ7wieS/bmx_fe3d_2_freestyle_extreme_3d.pdfIn PDF document text
    • https://cdn.sqhk.co/fogobewataja/7jijehc/online_occupational_therapy_assistant_programs_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/safubuguva/jBgh3be/15775170412.pdfIn PDF document text
    • https://javemutamutog.weebly.com/uploads/1/3/4/6/134638327/6740304.pdfIn PDF document text
    • https://cdn.sqhk.co/ropobemuma/ihtjfgj/popular_hashtags_today_copy_and_paste.pdfIn PDF document text
    • https://cdn.sqhk.co/zesonixiv/CicMnC0/wivupotujenamenewegev.pdfIn PDF document text
    • http://hurricane1.space/spirit_halloween_jobs_indeed9er3a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468563/normal_5fc7d246896c9.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/gezizefefififa/kapalua_beach_snorkel_report.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_off0000e296.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE296 5160 bytes
SHA-256: 42222d7dbb7e3b3ca6da51833b8cea8c76cce4f835041e585db260cc905b6a99
font_01_sfnt_off0000f444.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF444 10980 bytes
SHA-256: 86a009c8e1c5d1cbd8b2691cd05efba3fe0c081b7621e341528944d95919cd83

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