Malicious PDF — malware analysis report

Static analysis result for SHA-256 44b008933ab72c49…

MALICIOUS

PDF

87.2 KB Created: 2021-06-28 13:57:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: c60d327c2d1ef1fa1072ac04ea3d38ad SHA-1: 4524e41b94257ec010541331da8185fc0d425336 SHA-256: 44b008933ab72c4992af19e2c3226f0f5d059f8bc03c7db0e11dfd6aa3c3fff8
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by multiple heuristics as containing a link farm pointing to compromised CMS uploads and disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support its malicious nature. No scripts were extracted, but the presence of numerous external URLs suggests the primary attack vector is directing users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://www.sadcmedia.com/wp-content/plugins/super-forms/uploads/php/files/5la98booeae6env0ksl5vohr7n/bazulimalexu.pdf In PDF document text
    • https://burmesecatclub.nz/wp-content/plugins/super-forms/uploads/php/files/9509a37af11c4c3c06791e25ec2f9d4f/bewazepegigibuzu.pdfIn PDF document text
    • http://conservationenergy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c90f1343831---tolukewaxovanifadufimupi.pdfIn PDF document text
    • https://www.mobytec.com.br/mobytec/wp-content/plugins/formcraft/file-upload/server/content/files/160c9003076016---19964121745.pdfIn PDF document text
    • http://piemonteforyou.it/userfiles/file/73513816255.pdfIn PDF document text
    • https://micast.de/wp-content/plugins/super-forms/uploads/php/files/cg2mfndf554qqbg3kh9l5s6qv3/76838561094.pdfIn PDF document text
    • https://nowackleverkusen.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607950e1f0017---benovikut.pdfIn PDF document text
    • http://isgsrl.it/images/file/15670402605.pdfIn PDF document text
    • https://www.femregenx.co.za/wp-content/plugins/super-forms/uploads/php/files/kv2ikk7aur7mm2rk6jr06ms16f/busejolibi.pdfIn PDF document text
    • http://royalgroup.at/tmp/jofixibevodezuv.pdfIn PDF document text
    • https://shrmivirtual.org/wp-content/plugins/super-forms/uploads/php/files/196e1f0d042633ad016341de1e69b42c/xozuvuweju.pdfIn PDF document text
    • https://sudhirsachdevaclasses.com/ci/userfiles/files/78370135585.pdfIn PDF document text
    • http://xn--42-6kcdlkbomh7beggito5p.xn--p1ai/userfiles/file/13362969207.pdfIn PDF document text
    • http://www.zaluziemalina.cz/userfiles/file/58457412744.pdfIn PDF document text
    • https://apskarota.org/userfiles/file/50488101883.pdfIn PDF document text
    • https://aterhesseg.com/up_image/file/90400524374.pdfIn PDF document text
    • http://bpsstudio.hu/uploads/doxodogupadutoreb.pdfIn PDF document text
    • http://crystalnymph.by/wp-content/plugins/super-forms/uploads/php/files/590ec0f6da64b673e22a951f933c3c20/xilasamavozoxe.pdfIn PDF document text
    • http://www.liveartsaskatchewan.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d57ee3d4a20---dojarezanulunukiru.pdfIn PDF document text
    • http://www.ecostroyservis.ru/File/79148235130.pdfIn PDF document text
    • https://adbetelparaguay.com/wp-content/plugins/super-forms/uploads/php/files/33714d3e0b7c743488a2b060ae4328e3/8570109670.pdfIn PDF document text
    • http://marcobernini.it/userfiles/files/zaxazazajabozavisedewun.pdfIn PDF document text
    • https://www.spoton.pet/wp-content/plugins/super-forms/uploads/php/files/75khkp9fcd7i5rt91g1fsvlq1h/17847450883.pdfIn PDF document text
    • http://www.gradur.ba/wp-content/plugins/formcraft/file-upload/server/content/files/1607fa13dbcebc---12212068016.pdfIn PDF document text
    • http://kennyre.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af644d9a1c4---71945139262.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=timeline+of+my+life+templatePDF link annotation
    • 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_off0000f3c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3C7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010bd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BD9 17076 bytes
SHA-256: 037af8a872b58013ed7569a078261e49c98cddbde0911735fa0bb6ff91e2379f
font_02_sfnt_off00013838.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13838 10328 bytes
SHA-256: f98f03b3e34ee6f10675ca96bd4f65fa2776973cb3f11adc8692ae7941fa5fb1