Malicious PDF — malware analysis report

Static analysis result for SHA-256 002cc142c42c930a…

MALICIOUS

PDF

88.3 KB Created: 2021-07-05 13:47:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 525273bf53eb661d6d890581513485ef SHA-1: 6b0a623208a8e3b3ae3009413484ca716dee83b9 SHA-256: 002cc142c42c930ac3f748a6d9bd75eada8dd69fd1feda5fecb11b05554fb46b
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV. It contains numerous links pointing to compromised WordPress sites and other disposable hosting, suggesting a link farm designed to redirect users. The embedded URLs likely serve as lures for phishing attacks or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

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://archism.ru/uplcv?utm_term=scaphoid+fracture+and+avascular+necrosis
    • http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160751df867fad---66379424798.pdf
    • https://leganordavigliana.it/uploads/file/xobowilewu.pdf
    • http://english-life.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16071308468aa5---3339773225.pdf
    • https://rffsev.ru/wp-content/plugins/super-forms/uploads/php/files/a64b01f318419b0ac1ff8b1af854ae95/virul.pdf
    • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/203gdec31qe61718l7si4me8o7/46415170740.pdf
    • http://businessdevelopmentcenter.pl/uploads/userfiles/files/janikirenag.pdf
    • https://anfauglir.com/images/file/nozobuzixareluk.pdf
    • http://hitecds.com/userfiles/file/35047200777.pdf
    • http://jpind.pl/userfiles/file/56523307904.pdf
    • http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b732e288dae---31536968966.pdf
    • http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160bc1a1d7c062---79945508052.pdf
    • https://amesmedicalservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607cec2a81a12---migomuxokar.pdf
    • https://avvocatoboretti.it/file/53380134860.pdf
    • http://www.training4thefuture.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607142d8114e2---32065879821.pdf
    • https://clap-bas.com/userfiles/file/mexuzepivafutuv.pdf
    • https://mavismanagement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160849d762ad2e---kideralojimawexojonowamo.pdf
    • https://vandolderskb.com/images/usr/33474719534.pdf
    • https://socialchangefactory.org/wp-content/plugins/super-forms/uploads/php/files/c101b5a426ba7085736258a6ced9d530/baromevajobukopuxowada.pdf
    • https://creativesilhouettes.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160b11afc73321---51498857516.pdf
    • https://home18.ru/wp-content/plugins/super-forms/uploads/php/files/65b7bcea5c6d7a2fd0dd3be317609046/derobitureram.pdf
    • http://hanasushipickup.com/uploads/files/katagozisesuj.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_off0000f310.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xF310 16792 bytes
font_01_sfnt_off00010b22.bin
5d6814c8cfa5c8755e7faa7f040f3c68df46562c3258dafee13e4fe04018f2a1
pdf-font-stream PDF embedded font (sfnt) at offset 0x10B22 17936 bytes
font_02_sfnt_off000138ea.bin
68cd915c9bb4b042a013db0f355e2d9918bc406608304513d71ae58b9444d93f
pdf-font-stream PDF embedded font (sfnt) at offset 0x138EA 10956 bytes