Malicious PDF — malware analysis report

Static analysis result for SHA-256 9757e9b6d9372771…

MALICIOUS

PDF

71.0 KB Created: 2021-02-13 06:13:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a1f5224fe8e7da10535b8cb46afe6afa SHA-1: ac04589f60117d05a17833da608b154d37b8169f SHA-256: 9757e9b6d937277188bd7c9e5ff8bfd2e0d4ae427833db22e6c6a174389012aa
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 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://leonvi.ru/wix?keyword=shellshock+live+best+weapons PDF link annotation
    • https://cdn.sqhk.co/murerezusa/hdghgjt/crowded_house_something_so_strong_mp3_download.pdfIn PDF document text
    • https://jagunafine.weebly.com/uploads/1/3/4/3/134363358/bbc7b8c53ce9e.pdfIn PDF document text
    • https://gigazubexu.weebly.com/uploads/1/3/4/6/134613152/vonogemexo-sipetomonakomu-degelabavo.pdfIn PDF document text
    • https://wojafegozotug.weebly.com/uploads/1/3/1/6/131606577/fifiladosom-zixafikovawil.pdfIn PDF document text
    • https://nepexinis.weebly.com/uploads/1/3/1/4/131438592/saxufeve.pdfIn PDF document text
    • https://gobadinemi.weebly.com/uploads/1/3/5/2/135299992/mogim.pdfIn PDF document text
    • https://cdn.sqhk.co/xejoxoka/6aiC5zO/spaceship_arcade_game_list.pdfIn PDF document text
    • https://xafusotegemuwif.weebly.com/uploads/1/3/5/3/135304795/meduzutikalezi.pdfIn PDF document text
    • https://cdn.sqhk.co/xeduwukaxusa/d2Hujec/xujin.pdfIn PDF document text
    • https://cdn.sqhk.co/midipijikami/iibifZJ/big_outdoor_light_up_wreath.pdfIn PDF document text
    • https://zoditivifu.weebly.com/uploads/1/3/4/3/134316547/5388602.pdfIn PDF document text
    • https://kejazomunago.weebly.com/uploads/1/3/0/7/130776678/f624a7944564.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/davolazupivowi/66438717803.pdfIn PDF document text
    • https://s3.amazonaws.com/bubodeliza/13954628903.pdfIn PDF document text
    • https://s3.amazonaws.com/bufipevuril/95778092900.pdfIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/amoeba_form_of_locomotion.pdfIn PDF document text
    • https://s3.amazonaws.com/sixenogafopoj/2015389577.pdfIn PDF document text
    • https://s3.amazonaws.com/tozaduliwubega/55167695246.pdfIn PDF document text
    • https://s3.amazonaws.com/tezude/hernia_diafragmatica_cirugia_pediatrica.pdfIn PDF document text
    • https://s3.amazonaws.com/gagagakigibapo/3_dimensional_shapes_worksheets_for_6th_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/vukusa/chicken_invaders_10_free.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_off0000d8f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8F1 5384 bytes
SHA-256: 218951b88464a6c1369416416f1434533b42e3f409912f74d3d11b392d38318a
font_01_sfnt_off0000eb59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB59 10396 bytes
SHA-256: 22d8ea16707baa133c24943127a7b00e9914f61d76bc9218ac52ee066d4e9417

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