Malicious PDF — malware analysis report

Static analysis result for SHA-256 32ad80982ce35e12…

MALICIOUS

PDF

80.1 KB Created: 2021-09-08 20:54:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 2d729aaa83ae3866b09109f23895dbf4 SHA-1: 29a33eebe61c91817c55269258e3fa21e4b50aa2 SHA-256: 32ad80982ce35e129aaf4be20c09785202c8d438fbebb33d78219902c5fbb56d
156 Risk Score

Malware Insights

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

The PDF contains a large number of links, many of which point to compromised CMS upload directories, suggesting a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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.alwaysflorida.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613511a68f8da---vujagenijixemaniwobo.pdf
    • https://levin-dent.ru/wp-content/plugins/super-forms/uploads/php/files/c966ffca37bd5976c0f3ed81ac1ba8b5/runuvutimizuzomise.pdf
    • https://traveletrust.com/basefile/traveletrustcom/files/28215520245.pdf
    • http://it-hair.com/userfiles/68755670334.pdf
    • http://les-dvorik.ru/userfiles/file/38778648194.pdf
    • http://www.hollyskauaicondo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613115a2248dd---14332154235.pdf
    • http://99hospitalitygroup.com/ckfinder/userfiles/files/63031305535.pdf
    • http://misosmile.com/upload/editor/files/47972449862.pdf
    • https://www.db-ynox.fr/ckfinder/userfiles/files/bevamiragevinuxovamode.pdf
    • http://skncn.com/u/files/70243031727.pdf
    • http://easternhoteljeju.com/FileData/ckfinder/files/20210907_D44B97B64CE1CCED.pdf
    • http://clinicaveterinariagussago.com/userfiles/files/gaxefanizisosib.pdf
    • https://shreegroupco.com/userfiles/file/daloriwidezu.pdf
    • https://nutricount.cz/UserFiles/File/nojupuxek.pdf
    • http://pjteam.hu/uploads/levidil.pdf
    • https://khabul.mn/mmpa/userfiles/files/76094302952.pdf
    • https://thefencedocumentary.ca/adminfiles/file/xijanopeg.pdf
    • https://termofriz.rs/files/45853492238.pdf
    • http://softtox.pl/new/userfiles/file/66943612681.pdf
    • http://minerva-collection.net/files/files/97248002227.pdf
    • https://spotiverify.com/ci/userfiles/files/suxasatigigovanurusiga.pdf
    • http://www.oomewatersport.nl/upload/files/22522115306.pdf
    • http://masonhn.com/d/files/sarat.pdf
    • https://suma.ca/upload/editor/file/tajafibigil.pdf
    • http://cukierniabrzezinski.pl/www/artizam/fck/file/dinavuxozatosun.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=hyperledger+composer+documentation+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_off0000d134.bin
dd373fa8599340f18fb553eb2e997c77bf3e8ea7aed149497d23d32045d3e354		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD134 17660 bytes
font_01_sfnt_off0000fec8.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFEC8 16792 bytes
font_02_sfnt_off000116df.bin
2134951afbc4e8f1fa303dd23060f99d28072b605f8bf73a2b1069c8dc61f2f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x116DF 11168 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.