Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0edb9072fbc89de…

MALICIOUS

PDF

76.2 KB Created: 2021-09-03 21:20:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: d5491ce43e2361cda73bf4c3d5846266 SHA-1: fe2ea57787f80d91179ef9834faf469989e63777 SHA-256: d0edb9072fbc89de8facd1ba8aad08e0d9c142639615c856803500489102d581
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as a malicious PDF by ClamAV, and heuristics indicate it functions as a link farm pointing to compromised websites. The embedded URLs suggest a lure related to file conversion, likely to trick users into downloading further malicious content or visiting phishing sites. No scripts were extracted, but the PDF structure itself contains links that are indicative of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3127

Heuristics 5

  • 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
  • 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://drafthe.ru/uplcv?utm_term=pdf+to+word+conversion+mac PDF link annotation
    • http://www.sudaff.com/pics/file/39057121704.pdfIn PDF document text
    • https://catwalkdogcome.com/editor_upload_image/file/68595402004.pdfIn PDF document text
    • http://centrumbiznesurawicz.pl/userfiles/file/jeropozipazabivokokidomi.pdfIn PDF document text
    • http://rdmsrl.it/userfiles/files/regavofagubovatusisowaf.pdfIn PDF document text
    • https://lifo-sea.com/ckfinder/userfiles/files/fikanetuto.pdfIn PDF document text
    • https://paklya.su/design/img/upload/file/93853970759.pdfIn PDF document text
    • http://infrabud.eu/fckpliki/file/66507253075.pdfIn PDF document text
    • http://trekkingsapatours.com/upload/files/22054756768.pdfIn PDF document text
    • https://vashadvokat82.ru/wp-content/plugins/super-forms/uploads/php/files/ce455da7f7479fb7454cc5f0d4f38acd/30277243213.pdfIn PDF document text
    • https://eobliecky.sk/userfiles/file/vegijesubudesosawevezijaj.pdfIn PDF document text
    • https://lsp.od.ua/wp-content/plugins/super-forms/uploads/php/files/sp0c4vmhj4gum0p9s6rh7mf7s1/fanakunaw.pdfIn PDF document text
    • http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a69f67a2d8b---98004781362.pdfIn PDF document text
    • http://adams-gold.ru/archive/image/file/87835908454.pdfIn PDF document text
    • http://www.dawnrotaryclub.tw/UserFiles/files/64479898580.pdfIn PDF document text
    • http://bagpack.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/1609c6851d14d1---29980646767.pdfIn PDF document text
    • https://mbzgogo.xyz/web/img/podborky/files/xomikat.pdfIn PDF document text
    • https://archcosmeticstudio.com.au/wp-content/plugins/super-forms/uploads/php/files/d8392477b561e49502893dc1246e7916/lodovopepule.pdfIn PDF document text
    • http://sva-jeanroze.com/xmedia/file/nirixa.pdfIn PDF document text
    • https://benmoonpharma.com/userfiles/file/mulazed.pdfIn PDF document text
    • https://refundsrefunds.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e6b8c3fa44---polixazimupinujefari.pdfIn PDF document text
    • https://windsbs.biz/files/file/75725798792.pdfIn PDF document text
    • https://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/160e94afff3f27---6040200432.pdfIn PDF document text
    • https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160c7b8ea18b4c---dabox.pdfIn PDF document text
    • http://agriturismocorteerbatici.it/userfiles/files/ririk.pdfIn PDF document text
    • http://uniondeautoescuelas.com/wp-content/plugins/formcraft/file-upload/server/content/files/161286867aa894---20334615598.pdfIn PDF document text
    • https://tedvandergulik.nl/userimages/file/77165487354.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f521.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF521 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010d38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D38 10744 bytes
SHA-256: 1ecac76fc950e9d25d0bf96e5a3229cd40ea485dc3a15b1bb6f49bab5b4d96cc