Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fd24616eba60175…

MALICIOUS

PDF

93.7 KB Created: 2021-06-26 19:52:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 9b2ce06769b8786cf5b477bb329ba8a8 SHA-1: c4a14e7b0cc911eae1d9aeff9db13f1c6b3ae053 SHA-256: 0fd24616eba60175a90bfbc3c65237f8f96de262886681226b72e952c5884ade
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains a link farm pointing to numerous URLs, many hosted on compromised WordPress sites or disposable domains, suggesting an attempt to redirect users to malicious content. The presence of these numerous external links indicates a likely phishing or malware distribution attempt.

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://2016montemayorreunion.com/clients/e/e5/e530e98a7ee505477716bae2fe71cdef/File/rurerututizapadojogu.pdf
    • http://www.allatpatikapecs.hu/images/file/fowapunasimex.pdf
    • https://refour.dk/wp-content/plugins/super-forms/uploads/php/files/a115682cacb0adbeeb7736bf207e1037/6845963785.pdf
    • https://glass-haus.ru/wp-content/plugins/super-forms/uploads/php/files/19a9525f213c9b771875777414b3c04c/pelusoti.pdf
    • https://afriqueitnews.com/wp-content/plugins/super-forms/uploads/php/files/c4016a6dd9ffcc673b20701e9e3b82f8/zemujasevokegofadikini.pdf
    • http://shuswapladystriders.ca/userfiles/file/90984257615.pdf
    • http://makaeximworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d62dd0de97---69290588964.pdf
    • https://thewentworthco.com/wp-content/plugins/super-forms/uploads/php/files/v9ctdo1741t3iqc76e3vjtdgsa/63256185883.pdf
    • http://vegasoft.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160c9b56a67e79---76107994911.pdf
    • http://szao-spb.ru/images/news/file/xixopuwize.pdf
    • http://www.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/16073f7e89f360---58243911434.pdf
    • http://luingpyrex.cz/foto/Image/file/ketojoxigopalofunuzuvasog.pdf
    • http://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608ad822ec6c4---34376511268.pdf
    • https://www.hediyevideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160855579d100e---toxozegiv.pdf
    • http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b949f1bac71---96031605594.pdf
    • http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607eb11706f3a---defovuluvibebufuri.pdf
    • http://lavalnerina.it/userfiles/file/45051172442.pdf
    • http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1607608ef56b85---11938526755.pdf
    • https://www.clubmanizales.com.co/wp-content/plugins/formcraft/file-upload/server/content/files/160bf1bede6844---16313719673.pdf
    • http://www.champcaregivers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a518da181c---15795412223.pdf
    • https://sellerflows.com/wp-content/plugins/super-forms/uploads/php/files/6fb914bc7fe6cd11b536b69dc98e39fa/fexaxulitidijinewal.pdf
    • http://www.next-conseil.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160abf6eca094f---19532686549.pdf
    • https://creativesilhouettes.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160942ece566ef---42391866454.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=banister+of+stairs
    • 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_off00010dd7.bin
1524f878d59e31f8a78a4ee9da835056b6ef4ad08061252b35f5b929aaea2f43		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10DD7 10216 bytes
font_01_sfnt_off000124ec.bin
35e1305474af865c7235af53b118514427ccfc5c3f1367c577f207f9d978ed6d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x124EC 17688 bytes
font_02_sfnt_off000151e7.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x151E7 16792 bytes

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