Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a7f5706bf5639ab…

MALICIOUS

PDF

90.1 KB Created: 2021-07-02 20:32:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 38b1d891e9a6f434f5835c69d60acdbe SHA-1: be9e8dda7aedf93683f77a70634f3967164a1d0a SHA-256: 7a7f5706bf5639ab2c19ca77fcbd589b71f92d4c9b4b29c4835ced1bb1d8e869
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged by ClamAV as a phishing trojan and by an ML classifier as malicious. It contains numerous links, many pointing to compromised WordPress sites, suggesting a phishing or malware distribution campaign. The primary lure appears to be disguised as a download for story books, directing users to external URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9935

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://garglob.ru/uplcv?utm_term=download+story+books+free PDF link annotation
    • https://fermuar.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bfa4a321324---junus.pdfIn PDF document text
    • http://qkmedica.com/uploads/userfiles/file/22150106893.pdfIn PDF document text
    • https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/16073a6d888bd4---32964677332.pdfIn PDF document text
    • http://amon-syotengai.com/userfiles/file/8480318318.pdfIn PDF document text
    • http://ne-moloko.ee/wp-content/plugins/super-forms/uploads/php/files/2e6b2b38de15af3623387cd8b881fb5c/92427034773.pdfIn PDF document text
    • http://cezanart.com/userfiles/file/xuxikilupabijaruv.pdfIn PDF document text
    • http://payassistinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/160887d2d8e15f---88974910867.pdfIn PDF document text
    • http://aylincinarli.com/fckfiles/file/nuwenuti.pdfIn PDF document text
    • http://cargo3030.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160bac30847951---91355057628.pdfIn PDF document text
    • http://www.fullertherapy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081a2281fb0b---kasiwapujogumonerewetizu.pdfIn PDF document text
    • https://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160797fe78c03d---6267239101.pdfIn PDF document text
    • http://www.hotel-margherita.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d737bce922---pimesumeturudupanabomo.pdfIn PDF document text
    • https://asiatravel.kg/wp-content/plugins/super-forms/uploads/php/files/08b2ba708072174db01a3c49871acc23/13953728817.pdfIn PDF document text
    • https://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/b47255084973665251ec7fc76af4213c/bezonijumexa.pdfIn PDF document text
    • https://callmarkinvestments.com/callmark/files/besusebafexisetezej.pdfIn PDF document text
    • http://debden.org/userfiles/file/gekesusomodor.pdfIn PDF document text
    • http://conwaychristian.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c4919e53818---mosodexomevewenodumusiri.pdfIn PDF document text
    • http://www.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608a284fbf019---dabovomebelabejaxow.pdfIn PDF document text
    • http://xn--9p4b29dncp2cc6y.net/upload/fckeditor/file/37874854017.pdfIn PDF document text
    • https://clifestyle.net/uploades/userfiles/file/81648224981.pdfIn PDF document text
    • https://gymlesgeants.com/upload/editor/file/deladilolibejidoki.pdfIn PDF document text
    • https://soalmatematik.com/userfiles/file/69264360149.pdfIn PDF document text
    • https://www.alongsideasia.com/wp-content/plugins/super-forms/uploads/php/files/34c59498b276eeb168a0d2abdbf57e6f/nagugogirezojodu.pdfIn PDF document text
    • https://mvmdigital.gr/files/files/39321298670.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_off0000fe1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE1C 16980 bytes
SHA-256: 17ff9f714b5be95607a8af0438cb22ab45fdf147b0e2c02b5e4ce78f7315b1b9
font_01_sfnt_off00012a9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A9B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000142b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x142B2 10688 bytes
SHA-256: fffa4d2d27fe08f3714c20f0ae368ab81cf205c9ffb3dc966c0b6ae0484a4752

Open this report in the interactive analyzer, or submit your own file for analysis.