Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ef9def285bb532d…

MALICIOUS

PDF

90.0 KB Created: 2021-06-25 22:33:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 0b7164feb461b837160a77c3cb3b4d7a SHA-1: 46e194e201ed04b7d2cb65f7862d4926eb30ba14 SHA-256: 6ef9def285bb532dc4451af4443f742c2aac05dd21ddf9225043d5d87663a53f
156 Risk Score

Malware Insights

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

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links pointing to compromised WordPress sites, indicating a link farm designed to redirect users to malicious content. The document body was unreadable, but the heuristic firings strongly suggest a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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.communityheroesproject.org/wp-content/plugins/formcraft/file-upload/server/content/files/16090ef7e84533---risifinanewejeropowuw.pdf
    • https://dixietemporarystorage.com/wp-content/plugins/super-forms/uploads/php/files/67e0868fe072b1383c1a2f5af6d6d96a/67795642832.pdf
    • https://vidolamerica.org/wp-content/plugins/super-forms/uploads/php/files/0b55316a84092928ab6fae6425cfa784/perilinolagi.pdf
    • http://www.magicapro.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608362531382c---jezivapa.pdf
    • http://cdhsalumni.com/clients/28864/File/zakemegumorepila.pdf
    • https://www.ediliziaindustriale.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ac7db75812---tupozuko.pdf
    • http://www.emporiocaritaspisa.it/wordpress/wp-content/plugins/formcraft/file-upload/server/content/files/160844b6d4d78b---25731605541.pdf
    • http://raduzhniy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070eda90522b---91415446813.pdf
    • http://dolphinegypt.net/userfiles/file/mebelurojugupixo.pdf
    • http://leap-egypt.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a35bc8e675d---10121044486.pdf
    • https://laihouston.com/wp-content/plugins/super-forms/uploads/php/files/b0d639bd196609b491170079abff94c7/56361226672.pdf
    • https://medtek.vn/storage/file/88920847123.pdf
    • https://flexrocksrollovers.com/wp-content/plugins/super-forms/uploads/php/files/9k9qh06dq70fe66or317fbcp04/91794957461.pdf
    • http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c97c0b5d508---zalewipawamiruzeruneza.pdf
    • https://ivanda-commerce.hr/userfiles/file/kudufebimaravavanekizimaf.pdf
    • https://trsbarriersdirect.com/wp-content/plugins/super-forms/uploads/php/files/sjnioe67pnssi8fm4fiossides/worenejumobodajajev.pdf
    • http://www.hkwebdesign.com.hk/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc67260f90---48100543078.pdf
    • https://www.hagensmarketing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160844f9cd25f9---ruwebanorusoxefu.pdf
    • https://www.amiunaorchestra.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16089c5178055a---23574596749.pdf
    • http://biomassasia.net/data_ed/userfiles/file/46306922865.pdf
    • https://ht-cooling-j3t.com/contents//files/podalazil.pdf
    • https://www.projectorrentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cff38813beb---naxibabefutujabamowu.pdf
    • https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/1606cb03ceacca---rupojilimeboludoror.pdf
    • http://reiki-roots.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608ab6e58c229---larivusazebenip.pdf
    • http://ipceurope.eu/assets/file/28423796712.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=steps+of+feasibility+analysis
    • 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_off0000ffa0.bin
37e658bfd763a6c8734b7c1b1191dc6d2f1adc0c82c40ffed72fa713128526a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFFA0 16656 bytes
font_01_sfnt_off00012aca.bin
20fecd6b5e4c41ff10cd7f152a18ea1b9e624ab964bca56a64e404065c6f0697		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12ACA 10580 bytes
font_02_sfnt_off000142d7.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x142D7 16792 bytes

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