Malicious PDF — malware analysis report

Static analysis result for SHA-256 60b30014c88fca40…

MALICIOUS

PDF

84.8 KB Created: 2021-06-28 06:31:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: f64ebfeee662391978c1b391772bd5e9 SHA-1: 009bb7e77502a6faf9fca266393a240ed7ea9723 SHA-256: 60b30014c88fca40cc2aaac4eae88a5daf52c712f8c270301e19c483369183a5
156 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics reveal it functions as a link farm, directing users to multiple compromised websites hosted on disposable domains. These redirects likely serve to distribute malware or conduct phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://smidgel.ru/uplcv?utm_term=tv+pitch+template
    • http://premiumresourcing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607dddacc1a9b---jazogugirofowudugogu.pdf
    • https://urbanplace.me/wp-content/plugins/super-forms/uploads/php/files/c8fd4a6fc426280e2254c2c37d02ca2b/nubodadixa.pdf
    • http://cmrivestimenti.com/userfiles/files/sumadonetuxuzasaxisofejam.pdf
    • https://ajitcoatings.com/uploads/52441214560.pdf
    • http://bochosushi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f5da9d2325---falikolebowiko.pdf
    • http://omonetach.pl/foto/ilustracje/file/88430338989.pdf
    • http://xn--80aagkbrca3apkgkee0a1bi.xn--p1ai/ckfinder/userfiles/files/fibinonuj.pdf
    • https://tuabogadoangel.com/wp-content/plugins/super-forms/uploads/php/files/11714c468b0ae00596ead321e33e28df/xizuxoz.pdf
    • https://www.medicalart.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1607860f33c1b9---86507058643.pdf
    • https://aquaticlandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aced95a6a1b---88700157652.pdf
    • https://churchosonline.com/wp-content/plugins/super-forms/uploads/php/files/cc3e05864df10f4dd228d5ef739d490e/72236360146.pdf
    • http://www.atrium-tuiles.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bda257a9537---74762595978.pdf
    • https://backcountryplayground.com/wp-content/plugins/super-forms/uploads/php/files/e9ac3c2c7ef22c2dc9a617474fddf983/42747871596.pdf
    • http://comicpapyrus.com/wp-content/plugins/super-forms/uploads/php/files/03c1b27846cc424ac588d71973fa7d32/kewebazenuzu.pdf
    • https://homecareangels.ca/files/files/files/97317567762.pdf
    • https://www.rydalmereprestige.com.au/wp-content/plugins/super-forms/uploads/php/files/shtj82q93l58jcil39t529h1gi/tegazedapasajuto.pdf
    • https://gresathouse.com/wp-content/plugins/super-forms/uploads/php/files/1d7ab005e0d2b3cefe21c05aed55ed02/20517974218.pdf
    • https://vickers-electronics.co.uk/wp-content/plugins/super-forms/uploads/php/files/812df75d9302377d1b2ebeb3649b57fa/jewukazawegavagod.pdf
    • https://him-home.ru/wp-content/plugins/super-forms/uploads/php/files/f7215d7383f65ee967ba0e7958b23d25/33276589437.pdf
    • http://daming-school.com/userfiles/file/guxobofameluv.pdf
    • http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078b49641acb---13240226986.pdf
    • https://binarbaidequipment.com/public_html/userfiles/file/25616315073.pdf
    • https://jakspravnenapsa.cz/userfiles/file/gawiw.pdf
    • https://dedywiredja.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a8c020eb75---zobonulonidopofavomizole.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_off0000ea44.bin
db961d97eb2864706f7763779510c25da026826b1ff7a9f8f479d4d85891060a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA44 10176 bytes
font_01_sfnt_off00010116.bin
5f832923612d475b6befc5346920b5f70a6f2b882b59ba87c022c6c30af3065f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10116 17128 bytes
font_02_sfnt_off00012e15.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12E15 16792 bytes

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