Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bd32ac1a72219c6…

MALICIOUS

PDF

80.1 KB Created: 2021-09-09 03:03:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: cfb87d8ca87d44854e3f9d5a6e30f1bd SHA-1: 02c2767a700a033c8e538cd52db06b86a07c2f8c SHA-256: 9bd32ac1a72219c6b0938732bee34d9a664dadec3f291a0af7ad4a83729d63ac
126 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs pointing to external sites, suggesting a phishing or redirection scheme. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic further supports this, indicating a link farm on disposable hosting, likely used to obscure the true destination or distribute malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://songhakbbq.com/uploads/files/78835146012.pdf In PDF document text
    • https://giriconsultancy.com/content_files/files/wedowozejebef.pdfIn PDF document text
    • http://logicparcel.net/uploadsEditorfile/xitaxawi.pdfIn PDF document text
    • https://refakatci.net/userfiles/file/95679381586.pdfIn PDF document text
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1612fe46c561ab---52144023040.pdfIn PDF document text
    • https://nuevocoach.co.uk/wp-content/plugins/super-forms/uploads/php/files/f89db18b643e63eded8565587e90a1a0/panuxubev.pdfIn PDF document text
    • http://gurolmumcu.com/userfiles/file/86024089837.pdfIn PDF document text
    • https://themis-lex.com/userfiles/files/63210790606.pdfIn PDF document text
    • http://parvazyab.net/basefile/api203/files/xodawopo.pdfIn PDF document text
    • http://escuelasfutbol8.com/docs/files/22016994082.pdfIn PDF document text
    • http://konsultacjenaukowe.eu/Upload/file/rurimibebedu.pdfIn PDF document text
    • http://hongshengfish.com/uploadfiles/20210907/210907004729123722ys1hrnba0ihv.pdfIn PDF document text
    • http://realfootball.gr/userfiles/file/kokemipixukadudonogojuxe.pdfIn PDF document text
    • http://secureyun.cn/uploadfile/file///2021090602374551.pdfIn PDF document text
    • https://dortmundpools.com/contents/files/37445889433.pdfIn PDF document text
    • https://giga-tronics.com/userfiles/files/8924514008.pdfIn PDF document text
    • http://stefanourso.com/public/userfiles/file/raniwiwelo.pdfIn PDF document text
    • https://easypayindia.in/userfiles/file/238569934.pdfIn PDF document text
    • http://hpworld.hu/data/pic/Image/file/xadeteverar.pdfIn PDF document text
    • http://membranekeyboard.pl/_data/file/xevogusepemefelibonad.pdfIn PDF document text
    • http://palenice.net/obrazky_clanky/file/xerekobafadifawivi.pdfIn PDF document text
    • http://sewakendragroup.com/userfiles/file/maminorivafi.pdfIn PDF document text
    • https://cortopolis.ar/userfiles/file/67554691284.pdfIn PDF document text
    • http://sorokolaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/65051198512.pdfIn PDF document text
    • http://keifo.ru/ckfinder/userfiles/files/18398888409.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=vlc+android+to+smart+tvPDF 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_off0000d594.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD594 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000edab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDAB 10432 bytes
SHA-256: 1fb8b6f7cc3ac0b2cb1e7bd1303f73d04c3dda14392ec08fd589c3d2fcdf1451
font_02_sfnt_off00010551.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10551 17200 bytes
SHA-256: 036c087b9004d777287c565ecd8031caf04a15e5ed42ba7682ab0f2a17d33d30

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