Malicious PDF — malware analysis report

Static analysis result for SHA-256 0901a5d80239415b…

MALICIOUS

PDF

82.8 KB Created: 2021-06-26 22:32:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 1cbb097aeeca5229821d126bedbe4af1 SHA-1: e524968cf08e52fcb355e5c6925ac65ffb4224ef SHA-256: 0901a5d80239415b9089e183c2919b316b933d649250ca8a768a4189a54d4e48
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The numerous external URIs and link farms suggest a phishing or malware distribution campaign. The file's structure and embedded URLs indicate it is likely intended to redirect users to compromised websites or download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://crysiq.ru/uplcv?utm_term=linda+moulton+howe+glimpses+of+other+realities+pdf
    • https://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/160853174afad9---89616372443.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae01670f00d---mifisixividunika.pdf
    • https://bodwellassociates.com/wp-content/plugins/super-forms/uploads/php/files/ed5184af013b4f7489dd3b3af6a59668/pujosamizike.pdf
    • https://cafesca.mx/ckfinder/userfiles/files/mover.pdf
    • http://makaifruits.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089b609ca11a---89774505944.pdf
    • http://www.finanzanlagen-honorarberatung.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c708c5effc3---roduzudupubatun.pdf
    • http://grandchainfamilyfoundation.org/clients/85333/File/sipanivilugafisi.pdf
    • http://assistance.uz/images/shared/file/potaxivoradi.pdf
    • http://tubietelbar.hu/uploadfile/6307640509.pdf
    • http://bjaimama.com/data/upload/2021/06/file/202106160030467594.pdf
    • http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/nc8vsvpo0lt2eji6adm67bg881/57014295504.pdf
    • https://joepromenshealth.com/wp-content/plugins/super-forms/uploads/php/files/29033b72eca92fda320ba54f7b240e06/funogizewebujowidomibas.pdf
    • http://counterreaction.net/wp-content/plugins/formcraft/file-upload/server/content/files/160742662d6597---donowix.pdf
    • http://reiki-roots.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160935d31dc71c---jobuwisaxofakedofesid.pdf
    • https://www.idahomedia.com/wp-content/plugins/super-forms/uploads/php/files/cdb542e00f6597959c44387106c4f0bb/dowupusolijufaniteruk.pdf
    • https://mudateconmigo.cl/wp-content/plugins/super-forms/uploads/php/files/af6f8e557c264eed59216312526d24ba/24575829966.pdf
    • https://bouveau-consulting.com/userfiles/file/siduwanewezidokesowa.pdf
    • https://www.frankcapassoandsons.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9f037bcc4c---merajutubogivunuli.pdf
    • http://www.adatechotomasyon.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b6ffec5711a---mamuvepovavitebujuravi.pdf
    • https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b0857536134---45313033055.pdf
    • https://webgirls-studio.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087f42c75395---suvegoxukudak.pdf
    • http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/160743299a9b85---putulo.pdf
    • http://www.sensible-seeds-premium.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071ca5de8e3b---98088467573.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dbbd.bin
a28c9012281f045ac04f44c285e6d406793583bf7e059dd9969f30d73e6c8e44		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDBBD 11088 bytes
font_01_sfnt_off0000f531.bin
e777844af2abc5ac9aa0f392d0d385e15ce60734ed7e81844722d1e209b03e65		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF531 18732 bytes
font_02_sfnt_off00012555.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12555 16792 bytes

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