Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a6c97f8655dfbbc…

MALICIOUS

PDF

88.6 KB Created: 2021-07-13 19:54:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 524ac1b15279d5c03cb5825d837cef70 SHA-1: 47a4faafb97026d8a010ef5571368a6f222ea172 SHA-256: 7a6c97f8655dfbbc0df5360736e13b3038c09a12575f4ea6cb93c0635d390f42
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous links pointing to compromised WordPress sites and other potentially malicious domains, suggesting an attempt to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics indicate a likely phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.magicapro.it/wp-content/plugins/formcraft/file-upload/server/content/files/160786824cbc05---pazoxoxo.pdf In PDF document text
    • https://agrimal.pl/userfiles/file/dewipivumujag.pdfIn PDF document text
    • http://netisiletisim.com/guvennet/resimlerfiles/muwekixu.pdfIn PDF document text
    • https://completecollegestrategies.com/wp-content/plugins/super-forms/uploads/php/files/905f3a86fb67b226f39f56ba71a818e3/71083698701.pdfIn PDF document text
    • https://cald-lighting.com/wp-content/plugins/super-forms/uploads/php/files/a148a07957b20a053619830dfb096c84/22030712979.pdfIn PDF document text
    • https://aartipalette.com/userfiles/file/53323050186.pdfIn PDF document text
    • http://www.1atlanticfunding.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080f257b90d2---livabofozipid.pdfIn PDF document text
    • https://jiptv.nl/wp-content/plugins/super-forms/uploads/php/files/h9brho1rjjsnvjv7hirsuo0d7s/jalupepobosixoror.pdfIn PDF document text
    • http://ankaser.com/userfiles/file/salijejijatokizani.pdfIn PDF document text
    • http://webhenevents.com/clients/868374/File/34999533719.pdfIn PDF document text
    • http://victorylimo1.com/wp-content/plugins/formcraft/file-upload/server/content/files/160dbfed6bfadf---sewamajuva.pdfIn PDF document text
    • https://frennphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abcc6067afb---rasijatuvivirigixo.pdfIn PDF document text
    • https://aawyx.com/sites/default/imageuser/file/nadolekakapavu.pdfIn PDF document text
    • https://www.actionconstructionjax.com/wp-content/plugins/super-forms/uploads/php/files/d502dc42daeb2fbf7557e8b2d5f015d6/96771984985.pdfIn PDF document text
    • http://velkoobchod-man.eu/ckfinder/userfiles/files/98266940297.pdfIn PDF document text
    • http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609382eac4765---pivaxafefijezojegerim.pdfIn PDF document text
    • http://tchsgradnite.com/clients/5/57/571263abd544e5253d6fa656c7d1828a/File/lowewaropirizemidirigaw.pdfIn PDF document text
    • http://omgmediatank.com/userfiles/files/bajoxuzujebigoxobixebena.pdfIn PDF document text
    • https://pasarantogel.com/contents//files/75181600802.pdfIn PDF document text
    • https://www.bakirkoytemsilcisi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cb6c70d695---49089403632.pdfIn PDF document text
    • http://math-talk.kr/wp-content/plugins/super-forms/uploads/php/files/74iv5008102c9n6h93s7q623ho/67019744896.pdfIn PDF document text
    • https://zahnersatz.pl/userfiles/files/23952474937.pdfIn PDF document text
    • http://studioindelicato.com/userfiles/files/goxuposew.pdfIn PDF document text
    • https://pediatricpotentialsnj.com/PP/PPpng/files/joxuvidelanomizi.pdfIn PDF document text
    • http://agisma.ru/files/pages/files/71210498422.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=kirby+and+the+amazing+mirror+play+onlinePDF 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_off0000f76c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF76C 10976 bytes
SHA-256: 04898beb376cc16809498a1dce5ad22b1bf8d01d262cbb0ae11938e4b15434df
font_01_sfnt_off00011043.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11043 17140 bytes
SHA-256: 491d2d15f39f508f5540d86d82e415fe3287fb9e4603f24aa3c2923fa699abc0
font_02_sfnt_off00013cc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13CC5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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