Malicious PDF — malware analysis report

Static analysis result for SHA-256 de4bb38fae7f27ab…

MALICIOUS

PDF

84.4 KB Created: 2022-04-07 23:33:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-04
MD5: dd143f7c00ece01de8ba162cfbc7278f SHA-1: a424a9ac8905dd69201ca1e7f8b7dd958e85ed27 SHA-256: de4bb38fae7f27abad2ddff715fbe9341bc0f48dc20ce2e469b018d3de6cc964
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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.
  • 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 http://etecpresidentevenceslau.com.br/kcfinder/upload/files/30608989648.pdf In PDF document text
    • https://fudisilutopunus.weebly.com/uploads/1/3/1/4/131438012/cef38a8a3791.pdfIn PDF document text
    • http://acsalma.hu/userfiles/files/kugix.pdfIn PDF document text
    • https://mattweidnerlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/1624ab72baf13f---jinaku.pdfIn PDF document text
    • https://folenepawesig.weebly.com/uploads/1/3/2/6/132680852/7e2b0d91e6a4d.pdfIn PDF document text
    • https://dafavazama.weebly.com/uploads/1/3/4/8/134893815/de5957d07edf.pdfIn PDF document text
    • https://nigerizebamogut.weebly.com/uploads/1/3/4/5/134596745/84f8d.pdfIn PDF document text
    • http://strap.sk/uploads/files/tuleruvajaxuwasel.pdfIn PDF document text
    • http://pet.nfe.go.th/m_site/ckfinder/userfiles/files/59075425522.pdfIn PDF document text
    • http://explosivedevices.ru/media/file/79016116813.pdfIn PDF document text
    • https://daworotiboxega.weebly.com/uploads/1/3/0/7/130775949/2604977.pdfIn PDF document text
    • https://nozagovedenide.weebly.com/uploads/1/3/2/6/132682533/buguxig.pdfIn PDF document text
    • https://nugizutotenit.weebly.com/uploads/1/3/4/5/134502776/siroji_fewofifupam_pefetinubufoba_xijeruraz.pdfIn PDF document text
    • https://detaliwaka.weebly.com/uploads/1/3/4/3/134340587/nudeji-pizenazusiso-mutokinovaj-fijifi.pdfIn PDF document text
    • http://xn--bqrr0jw6bmw2g.com/userfiles/file/1648982824.pdfIn PDF document text
    • https://kugavulaxux.weebly.com/uploads/1/3/4/4/134454690/831c90.pdfIn PDF document text
    • https://ruvikofaxum.weebly.com/uploads/1/3/1/3/131380889/gasuxowamivasuli.pdfIn PDF document text
    • http://kelt.pl/userfiles/file/25995146943.pdfIn PDF document text
    • https://nodejobirutita.weebly.com/uploads/1/3/4/7/134748641/8789191.pdfIn PDF document text
    • https://lazav.co.za/YmrXLWy8?keyword=the%20snows%20of%20kilimanjaro%20summary%20pdfPDF link annotation
    • https://mewufoxu.weebly.com/uploads/1/3/4/7/134743860/3942962.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 extracted file (font_00_sfnt_off0000e3c6.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000e3c6.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e3c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3C6 17548 bytes
SHA-256: d6869756c7462acbbd03ac0e6ca69b9c6a058219e9956c321d71e242bbfec0e0
font_01_sfnt_off0001116c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1116C 11148 bytes
SHA-256: 3a4ca70e5a0541a93d68549f89cf30efde73310b03a4d0a20613e3b28757346c
font_02_sfnt_off00012b41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B41 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1