Malicious PDF — malware analysis report

Static analysis result for SHA-256 60ce271922763feb…

MALICIOUS

PDF

87.9 KB Created: 2021-08-20 09:32:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 579c26602db04001f844ec431d54aed7 SHA-1: 242d7ca8f28f38638d0ff03fb1a35c138f40c256 SHA-256: 60ce271922763feb4f3a99140f8d4adff190112466b40e6a43834970fb565843
196 Risk Score

Malware Insights

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

The file is a PDF identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of an advance-fee scam. It contains a link farm with numerous URLs pointing to potentially compromised websites, suggesting an attempt to redirect users to malicious content or phishing pages. The PDF structure itself is also noted as a link farm on disposable hosting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9957

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://bagandpack.ru/wp-content/plugins/super-forms/uploads/php/files/dc8060d6f42fdd5d3fc0fe1fc61cb5b0/lisinogujomovese.pdf
    • https://laser-arena.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9396e18b7---zekoponarusufesomubotok.pdf
    • http://furmanreunion2021.com/clients/3/37/3732e4fa3878e851f9d164dff32a9cbb/File/tidebojezozatepawomipibup.pdf
    • http://albatrossmrn.com/konadnew/userfiles/file/zurekifobafo.pdf
    • http://alteredcompta.com/buddha/ckfinder/userfiles/files/95865973241.pdf
    • https://www.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/160772099d4d75---27751434649.pdf
    • http://sva-jeanroze.com/xmedia/file/neribupenepe.pdf
    • http://mamaskitchenorder.com/uploads/files/52173784182.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b5084de177---biwigomujedilipo.pdf
    • https://artasedanasingaraja.com/uploadfck/file/13117906617.pdf
    • http://jjw-led.com/userfiles/file/sijefefefavajufoji.pdf
    • http://zpb-maciejewski.pl/upload/fck/file/lexunubedipiserixaro.pdf
    • https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160b01dda9f984---javuxubefipuwexumoz.pdf
    • http://studioambienteterritorio.it/userfiles/files/71210967838.pdf
    • https://fwullong.com/upfiles/editor/files/didaxojiwuxuwi.pdf
    • http://fabrykakonwersji.pl/wp-content/plugins/super-forms/uploads/php/files/204b78f304f2e241b0d325f9fa2c2006/barawutirerawaruguzub.pdf
    • http://csc0532.com/userfiles/file/20210807062841_jsb9ue.pdf
    • https://grahampropertytax.com/wp-content/plugins/super-forms/uploads/php/files/b03a986225ad14a6072c967b55144fd3/naxusekule.pdf
    • http://www.plain-pied.com/editeur/ckfinder/userfiles/files/51197973037.pdf
    • http://diamantina-joaillerie.com/ckfinder/userfiles/files/dazugu.pdf
    • https://forkidsvietnam.vn/wp-content/plugins/super-forms/uploads/php/files/c9s7tthik9all1o6l1234s1jeh/gazakeluzufudozorif.pdf
    • https://motiv8workout.com/up/files/talutodil.pdf
    • http://kimhoatra.com/upload/fckimagesfile/bukuputipa.pdf
    • https://gauravkankariya.com/wp-content/plugins/super-forms/uploads/php/files/t0008qtpnpi1r155u6tc9fhnk6/wijufagisugadetupapevox.pdf
    • https://moscreen.in/cmsfiles/file/pagojesulaxapeva.pdf
    • http://leebyenghun.com/new/upload/board/files/6777738650.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=matchbox+cars+price+guide+uk
    • 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_off0000f233.bin
ddc92771f6d36cdf3eb178efcbe7978dcab199ceeffeb4451107ea909010a170
pdf-font-stream PDF embedded font (sfnt) at offset 0xF233 17340 bytes
font_01_sfnt_off00011fb8.bin
36b62f2a91583455e7d8b3e80a793915255e57add342b5537d1d7774927f1319
pdf-font-stream PDF embedded font (sfnt) at offset 0x11FB8 11068 bytes
font_02_sfnt_off00013952.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x13952 16792 bytes