Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e38a45a3cf4c10c…

MALICIOUS

PDF

81.9 KB Created: 2021-09-01 15:34:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 75f1545c6a8b7e7a0d43558e2d68c427 SHA-1: eb4875c386332c5fd579e2b25b3be1eea7671202 SHA-256: 2e38a45a3cf4c10ce4a9c06bf79ce650a0a921c12d7947192384720ccfb18171
156 Risk Score

Malware Insights

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

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links, many pointing to disposable hosting or compromised CMS uploads, indicating a link farm designed to redirect users to malicious sites. The document body is heavily obfuscated, preventing analysis of its specific content, but the heuristic findings strongly suggest a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://clubsahdianagalati.ro/upload/editor/file/sofonazofonik.pdf In PDF document text
    • http://akgikorea.com/file_upload/fck_upfile/file/wuxex.pdfIn PDF document text
    • http://parkwestresidences.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f31b891dead---fobevu.pdfIn PDF document text
    • https://grandiosieventinuziali.it/filesUploads/file/lasafegatipagizifuk.pdfIn PDF document text
    • http://mp-hd.de/data/aktualnosci_imgs/file/61336882899.pdfIn PDF document text
    • https://gbagencement.fr/uploads/file/22562582944.pdfIn PDF document text
    • http://slp72.com/clients/7/7b/7b902bee17765b19ebdde6030f24742d/File/navevupemezudupalovuzufi.pdfIn PDF document text
    • http://alpha-cp.com/userfiles/file/ritowejis.pdfIn PDF document text
    • https://www.picmephotoboothhire.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16076926bab679---53013092000.pdfIn PDF document text
    • https://beeshark.ro/app/webroot/files/userfiles/files/18010436045.pdfIn PDF document text
    • http://health-bridge.in/upload/file/nufupazenipu.pdfIn PDF document text
    • https://lakeshoresmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/8p2327ah11h1g4r3eq0c4teqa1/96079638323.pdfIn PDF document text
    • http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160ab16cdcbc9d---kimepowoxiduxukozalunek.pdfIn PDF document text
    • http://hoondb.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f92f7825d3---xezuwiwolizudesuveri.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c68fe1d0fe---wifonomedefiwukinofopas.pdfIn PDF document text
    • http://cleannshieldflorida.com/wp-content/plugins/super-forms/uploads/php/files/e8e1ab949739e832bd815840e49a7476/didakovivakebidazabob.pdfIn PDF document text
    • http://mishelik.ru/userfiles/file/1718066982.pdfIn PDF document text
    • http://www.kliningstroy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16080b252a493f---8734514527.pdfIn PDF document text
    • https://loan-financial.com/wp-content/plugins/super-forms/uploads/php/files/d9697d31b2286831b7bdb20bf40da616/11386713155.pdfIn PDF document text
    • http://somogroup.vn/ckfinder/userfiles/files/nufaduzix.pdfIn PDF document text
    • https://perleyparish.org/wp-content/plugins/super-forms/uploads/php/files/51fb2193d8ab77c02398793ae324fbf1/99645473342.pdfIn PDF document text
    • https://www.allterra.group/wp-content/plugins/super-forms/uploads/php/files/7b877a886a88abdf86bb28af0ac5c0e0/72937009396.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=how+to+compare+two+pdf+files+in+adobe+readerPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d949.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD949 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f15b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF15B 17904 bytes
SHA-256: c559d143de199e192e5f503c9d3753132ea9cb6f24b9b848c6afc244f53c164a
font_02_sfnt_off00012031.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12031 10996 bytes
SHA-256: cc204103c2893256b959c8e561ec931ba42043462152b48b5f89f11c947b85a5

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