Malicious PDF — malware analysis report

Static analysis result for SHA-256 782bf87ac664f8a2…

MALICIOUS

PDF

81.9 KB Created: 2021-09-18 19:53:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-16
MD5: accac8c060627eb813da7334dbfdf1c9 SHA-1: 0b6883fdca417ae029babc72a3876293cdcd71c7 SHA-256: 782bf87ac664f8a2b9fe48187d5b8705f9f84f53837a9c0d99ca5b7d7c7f24bc
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.
  • 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://infrive.ru/uplcv?utm_term=how+do+you+scan+a+barcode+with+your+cell+phone PDF link annotation
    • http://hftyby.com/upload_fck/file/2021-9-2/20210902123535997596.pdfIn PDF document text
    • https://southafricapools.com/contents/files/sataz.pdfIn PDF document text
    • http://wksystems.net/HotelEstimator/userfiles/file/rejokunuludaz.pdfIn PDF document text
    • http://sieckultury.pl/wp-content/plugins/super-forms/uploads/php/files/ca00fe9d802d69a6bfed3aac2a5845dc/japoxupago.pdfIn PDF document text
    • http://huefpdf.org/upload/file/gujetojumovazukakofop.pdfIn PDF document text
    • http://pass38.com/images/contentimages/files/genizitulutorunurogonot.pdfIn PDF document text
    • http://jumpinfit.it/userfiles/files/rekumitowolusiv.pdfIn PDF document text
    • https://korankertas.com/contents/files/wikuxusazir.pdfIn PDF document text
    • http://ageddfjtjgrade.pretty-match.com/upload/files/56580150221.pdfIn PDF document text
    • http://doubler-son-capital.com/photos/files/bodesawopa.pdfIn PDF document text
    • https://westcoastmovers.ca/wp-content/plugins/super-forms/uploads/php/files/hf0825hg7f1k14kvf2p0g1vr85/93252546159.pdfIn PDF document text
    • http://mabifitness.it/userfiles/files/kunixemupemazokago.pdfIn PDF document text
    • http://www.chubsorn.com/file/files/bojawiraxagubefukir.pdfIn PDF document text
    • http://achwvs.love-mrt.com/upload/files/lawoxutewi.pdfIn PDF document text
    • http://coimbrasoftware.hu/images/uploads/files/panoxizabugoxoduwifimob.pdfIn PDF document text
    • https://www.karelo.com/uploads/File/wolizoguwobepepodiremoje.pdfIn PDF document text
    • http://neodev.space/wp-content/plugins/formcraft/file-upload/server/content/files/16143a372454df---didog.pdfIn PDF document text
    • http://fulns.com/uploadfile/fckedit/file/1630663652cVPr.pdfIn PDF document text
    • http://top-caster.com/userfiles/file/beperurajevinodawuzuxone.pdfIn PDF document text
    • https://licorne-hotel-restaurant.com/userfiles/file/23187593684.pdfIn PDF document text
    • https://tiguan-wiki.ru/file/90279202382.pdfIn PDF document text
    • http://elosc.com/upFile/file///ITX202109090559354651.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB20 11044 bytes
SHA-256: 1ca2c3336d2eb108ce971f815eca2691035994f9541b8f22c200e9c8ff0b7f98
font_01_sfnt_off0000f491.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF491 17476 bytes
SHA-256: 443981ec9c66381bcd1b9933ccffcf4f60e2ac2fa3bfd9811272202c4b9babc9
font_02_sfnt_off00012225.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12225 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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