Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d1a07496e2288e0…

MALICIOUS

PDF

103.3 KB Created: 2021-06-30 10:45:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: a68e35d1432b7ede997b8591e7e5116b SHA-1: 17fe45f02541bdd4f6221393bcd6b423f490fd95 SHA-256: 0d1a07496e2288e042476f47cc9c18a61cf4451fa5004d1fbcbf46f4737a77e3
156 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to potentially compromised WordPress sites, suggesting it's part of a link farm or phishing campaign. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or distributing further malware. No scripts were extracted, but the structure and URLs point towards a malicious document designed to lure users to external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9926

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://adams-gold.ru/archive/image/file/85121994210.pdf In PDF document text
    • https://callhfelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608cfb06dd3c8---larimosoxezaxi.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/160799f8a825ec---sutobopisasiwibabileras.pdfIn PDF document text
    • http://mattstergamer.com/wp-content/plugins/super-forms/uploads/php/files/4mhdeev8cc4qjrgh5hifpleo4v/jirorelexilomanavuvudid.pdfIn PDF document text
    • http://dobryremont.pl/ebobas/portal/app/webroot/img/tmp/file/16214405799546.pdfIn PDF document text
    • https://planet-for-events.de/userfiles/file/kotutep.pdfIn PDF document text
    • http://web68s.com/upload/files/sasuradagujaniwezuforebu.pdfIn PDF document text
    • http://vegasoft.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160b8b69d62c1b---55444740922.pdfIn PDF document text
    • https://callhfelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079cf47d6334---74996619549.pdfIn PDF document text
    • http://akcjonariusz.com/UserFiles/file/pebinodugiwevuwirelagino.pdfIn PDF document text
    • https://www.dolphinrfid.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b74e084e9e1---46730270173.pdfIn PDF document text
    • http://www.fullmooneye.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078b19989f84---21090802410.pdfIn PDF document text
    • https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084f12e27c0e---nibezaj.pdfIn PDF document text
    • http://www.naturapreserved.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077d99e9381e---81927872283.pdfIn PDF document text
    • https://useoneconvo.com/wp-content/plugins/super-forms/uploads/php/files/29156f9dc283a368f35b6a216227b993/31982855865.pdfIn PDF document text
    • https://ankaratemizlikcim.com/depo/sayfaresim/file/rusifidebatamusurufobon.pdfIn PDF document text
    • http://www.johnknox.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160d351dea45af---57193164218.pdfIn PDF document text
    • https://3dreamvr.com/wp-content/plugins/super-forms/uploads/php/files/6d17221c711d754aa80e8264c4efe445/15575134680.pdfIn PDF document text
    • http://www.radioemka.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e0a1c67dc4---40198068524.pdfIn PDF document text
    • http://asdgolfclubtoscana.com/writable/public/userfiles/file/bululazu.pdfIn PDF document text
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/110527b33e9ccf6dc0fd9d815ebcfda6/57934709878.pdfIn PDF document text
    • http://gorisum.net/fckeditor/upload_file/file/54427471886.pdfIn PDF document text
    • http://provia-events.de/pics/fotos/1/file/ziwatu.pdfIn PDF document text
    • http://oodow.cn/upload/file/210617011238885493o1gfp5mb6n4d.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=all+american+candidatesPDF 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_off00013260.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13260 17120 bytes
SHA-256: 7c009b83f80357da7034138786f1341cc0a233818309fcf0399bb698606e47c8
font_01_sfnt_off00015ea6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15EA6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000176bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x176BD 10392 bytes
SHA-256: bfba7f497e6e1fde87083ea60fcdafb834c51976f10b8db8fdc8fde349008a9f

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