Malicious PDF — malware analysis report

Static analysis result for SHA-256 5107a98fe7305ef4…

MALICIOUS

PDF

72.3 KB Created: 2021-03-09 08:59:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 09351e0b6ba0e7f3cc6ad73ff1d71543 SHA-1: c53e0ace3427412404f8e9471dea62864cc50e82 SHA-256: 5107a98fe7305ef430bd5338bc14056d72884ef01561c1d80e65c109c4163caf
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://seumenha.ru/award?keyword=benim+hocam+tarih+konu+anlat%25C4%25B1m%25C4%25B1+pdf PDF link annotation
    • https://cdn.sqhk.co/pomiwuximu/iCK01ia/lepepopiridozakefupikoz.pdfIn PDF document text
    • https://cdn.sqhk.co/wajidafix/hOggrjf/fenejuji.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403674/normal_5fdd4760afc21.pdfIn PDF document text
    • https://cdn.sqhk.co/vasozaponem/aKz7K1G/25938662876.pdfIn PDF document text
    • https://cdn.sqhk.co/rizonozugaj/ijfjghJ/93756062671.pdfIn PDF document text
    • https://katexiru.weebly.com/uploads/1/3/4/5/134576370/sakevugewoxobix-salagozojos-dajiz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481994/normal_6015cc855d89d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474746/normal_5feb861276b92.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471273/normal_601d9c8d17987.pdfIn PDF document text
    • https://cdn.sqhk.co/luwukamuku/ajbmnic/machine_gun_kelly_megan_fox_tattoo.pdfIn PDF document text
    • https://cdn.sqhk.co/muligumixe/fggcowl/moneygram_stock_price_history.pdfIn PDF document text
    • https://jutoxanifi.weebly.com/uploads/1/3/5/3/135321179/93d409867.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4531523/normal_5fe2d4b75c4d6.pdfIn PDF document text
    • https://cdn.sqhk.co/litawoxelida/gcqigif/bowling_ball_pro_shops_online.pdfIn PDF document text
    • https://cdn.sqhk.co/xifobariw/ggiRjjm/nufotofeberen.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/borokegujuzero/lavadora_brastemp_9kg_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/zerejibixupav/changes_of_state_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/nemafu/edema_formation_in_nephrotic_syndrome.pdfIn PDF document text
    • https://s3.amazonaws.com/kefodek/56535753228.pdfIn PDF document text
    • https://s3.amazonaws.com/lusabifef/zabofarilikajav.pdfIn PDF document text
    • https://s3.amazonaws.com/tamobalasu/20th_century_bookkeeping_accounting.pdfIn PDF document text
    • https://s3.amazonaws.com/gawabog/indian_snacks_recipes_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_off0000cfe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFE2 5360 bytes
SHA-256: b96f0d7ae3e0e321d53d809f13078dc938dda697bcaa075c3d003506ccc9f8a7
font_01_sfnt_off0000e1f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1F9 15416 bytes
SHA-256: e3dce937efabb1873117b625be89219f2ea864008260671401ebbfddf9c27528

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