Malicious PDF — malware analysis report

Static analysis result for SHA-256 4aff3a3422b8b7f2…

MALICIOUS

PDF

304.2 KB Created: 2022-02-26 03:49:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: 90408dbe9a0c8971b75b23e6e9a883a9 SHA-1: 13c41323e66200f19dc12da6d8aafbd36098e223 SHA-256: 4aff3a3422b8b7f23d4460293199e7581e087abcda05e14f4791f8ffaa6c3fba
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7582

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
  • 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.
  • 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.
  • 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://lovig.co.za/XSRYdR1H?utm_term=android+watch+faces+2019 PDF link annotation
    • http://architettomontanino.eu/userfiles/files/31362021735.pdfIn PDF document text
    • http://janjoling.com/public/ckfinder/userfiles/files/zowefufakuvinojavad.pdfIn PDF document text
    • http://watdoenwevandaag.nl/upload/tuvojapovujubiraw.pdfIn PDF document text
    • https://emons-verlag.com/testarea/cwsCMSlight/media/files/fapugetinosumanuselog.pdfIn PDF document text
    • https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/161963425780f3---madowidimaresepodifalazif.pdfIn PDF document text
    • http://www.virtualaid.eu/wp-content/plugins/formcraft/file-upload/server/content/files/161597916868b9---54487405157.pdfIn PDF document text
    • https://kenhquangcao.vn/uploads/files/fagubamofigin.pdfIn PDF document text
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/fn6qlejtat1pvsah1i6kckbbp1/1907482334.pdfIn PDF document text
    • https://tourgardan.com/basefile/tourgardancom/files/vemavezofinekitegepapo.pdfIn PDF document text
    • http://asfus.net/virgsurv/userfiles/file/nopad.pdfIn PDF document text
    • http://modelkyujin.com/wp-content/plugins/formcraft/file-upload/server/content/files/16129250199544---jumojilewodoxukimomuma.pdfIn PDF document text
    • http://anindecor.pl/files/file/zaximovemexuvetukutudagit.pdfIn PDF document text
    • https://istanbulbalbir.com/upload/ckfinder/files/refer.pdfIn PDF document text
    • http://vtaky.sk/media/file/32894904929.pdfIn PDF document text
    • http://quickfix-poland.com/wp-content/plugins/formcraft/file-upload/server/content/files/162019f577b3fe---85534817477.pdfIn PDF document text
    • https://areshin.ru/wp-content/plugins/super-forms/uploads/php/files/15de8d21b90e7d9edb4ce2834b825130/radagafel.pdfIn PDF document text
    • https://wemservice.com/ckfinder/userfiles/files/42584062241.pdfIn PDF document text
    • https://larustt.com/upload/ckfinder/files/zoviwexikere.pdfIn PDF document text
    • https://zagi.hr/files/29931906992.pdfIn PDF document text
    • http://finproekt-msk.ru/userfiles/file/53883476861.pdfIn PDF document text
    • http://bong-dem-long.org/upload/editor/files/lifolajiripop.pdfIn PDF document text
    • http://manu-transport.com/documents/file/mopomer.pdfIn PDF document text
    • https://canoe.ro/Extras/ckfinder/userfiles/files/32249299753.pdfIn PDF document text
    • https://maria-galland.ru/files/file/fusatexuw.pdfIn PDF document text
    • http://skogsformedling.se/bilder_umeny/File/gufajosijamidipesedoraf.pdfIn PDF document text
    • http://kindergartenhelden.at/upload/file/37805435653.pdfIn PDF document text
    • http://www.expertnutritionadvisor.com/wp-content/plugins/formcraft/file-upload/server/content/files/161ce2993c0377---47304190806.pdfIn PDF document text
    • https://fkip.unsam.ac.id/kcfinder/upload/files/kuson.pdfIn PDF document text
    • http://unseretochter.ch/images/file/41897161468.pdfIn PDF document text
    • http://caerulumpharma.com/upload/files/12542689317.pdfIn PDF document text
    • https://dodatnojamstvo.com/userfiles/file/2332936609.pdfIn PDF document text
    • https://atahca.pt/atahca_gestor/kcfinder/upload/files/lozogubodukix.pdfIn PDF document text
    • http://localhomesales.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/161605ca6ca4f1---82820396801.pdfIn PDF document text
    • https://www.tonygssoulfood.com/wp-content/plugins/super-forms/uploads/php/files/703d15d24b6faf11a543855bbb0e9c03/xulaxejejokidagijewuwu.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_off000450c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x450C5 11056 bytes
SHA-256: 1a24c534b71662cb149687ee56090e0c553b87f31de6838d83b986db30c2f306
font_01_sfnt_off00046a9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x46A9F 18284 bytes
SHA-256: 55663e3a3751e0c9297295615b2f7fe3d619d0f139f96101c896827bdc583597
font_02_sfnt_off00049a7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49A7A 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9