Malicious PDF — malware analysis report

Static analysis result for SHA-256 93f079b070f88aaf…

MALICIOUS

PDF

73.6 KB Created: 2021-06-27 19:27:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 52d64667d60dd107a041d7f9a80659ae SHA-1: 8c803461fbd55a1836086634ef056cc477cbb2d5 SHA-256: 93f079b070f88aaf3a044111756eb4820165cf16bb437bfdf1758bd36d854e03
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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 http://www.euro-fly.eu/userfiles/files/jokogi.pdf
    • https://autosaloncenter.com/uploads/file/dozefoderebox.pdf
    • http://ajivikafinance.com/userfiles/file/8377711275.pdf
    • https://maloneslandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c4923c7f907---pinowumomifozi.pdf
    • http://www.photobreak.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a207974ea5d---11088667824.pdf
    • http://queuemanagementsystems.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b62521989f8---walupanovifarusi.pdf
    • https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c2115718204---43918005627.pdf
    • https://sportli.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1607942d847769---sitimesalibiwuxasudires.pdf
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/1607ffb8a9824c---45071919776.pdf
    • https://kicksomeglass.com/wp-content/plugins/super-forms/uploads/php/files/5792301b3fdf8088c35e6c838651edc8/64700981862.pdf
    • https://www.energetisch-therapeut-estie.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16093cbd4a472a---bonizoloxadiwifud.pdf
    • https://catherinehourihan.art/wp-content/plugins/super-forms/uploads/php/files/8ac5031110ad8b1ce5cdd300f88792b4/jizokavibufuzuseke.pdf
    • https://amalighting.com/wp-content/plugins/super-forms/uploads/php/files/8482b2d7406aacae44d7bbc6f0858318/67957073478.pdf
    • http://jockmurray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d62a6ea448c---wokowosifojafupew.pdf
    • http://oklogistic.lv/upload/file/lomaj.pdf
    • https://yourlightingbrand.com/wp-content/plugins/super-forms/uploads/php/files/cad001ab7c5f64e7c9cc3296e1b37e59/rexaz.pdf
    • http://aelma.com/sites/default/userfiles/file/37372892687.pdf
    • http://ibshop.gr/uploads/_uploads/files/sekigezekeruw.pdf
    • https://motelandratecuci.ro/userfiles/file/votel.pdf
    • https://www.chartsunlimited.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/1609cbea36b384---rijatowidad.pdf
    • https://pabausa.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c4d09dc16e8---golir.pdf
    • http://dailyliving.nl/ckfinder/userfiles/files/gozanumesakuniv.pdf
    • https://elesud.it/img_pagine/file/93356653497.pdf
    • https://wamsconference.com/wp-content/plugins/super-forms/uploads/php/files/e053eaf260e31703443a259bb1b5b5d0/55762742048.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=the+ultimate+guide+to+price+action+trading+pdf+rayner
    • 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_off0000bc1c.bin
f45da85e0cca7fa656ce94516efba536d8d495b8625913ff0ff30a1930646c45
pdf-font-stream PDF embedded font (sfnt) at offset 0xBC1C 11076 bytes
font_01_sfnt_off0000d582.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xD582 16792 bytes
font_02_sfnt_off0000ed94.bin
c04dcd73cbf00e44952e0b3c701771e15a7f836744a7aff0c2c6e8b059ca1333
pdf-font-stream PDF embedded font (sfnt) at offset 0xED94 16540 bytes