Malicious PDF — malware analysis report

Static analysis result for SHA-256 82af597beb2ff186…

MALICIOUS

PDF

77.6 KB Created: 2021-09-11 21:55:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: d4a3441350efb34db2a78710007b15d4 SHA-1: 703a0d03963ae5745a7d48f8e570297e0062c1fc SHA-256: 82af597beb2ff186cf3f81b88b90d29f28a6ed2fa01e6faa497ab49730bd861d
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and multiple external URIs, including one pointing to a PDF hosted on a domain flagged as a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery. The embedded JavaScript suggests an attempt to exploit vulnerabilities or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6343

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • External URI info PDF_URI
    PDF contains an external URL action
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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://ginniglobal.com/uploads/file/kixevudubume.pdf In PDF document text
    • http://matsonconstruction.net/userfiles/file/27369752275.pdfIn PDF document text
    • http://storemisr.com/uploads/files/memex.pdfIn PDF document text
    • http://gezond-trakteren.nl/kasteel-doornenburg-img/bestandenfile/45185496959.pdfIn PDF document text
    • http://napiarsaigh.com/images/guwapodagamaweluxu.pdfIn PDF document text
    • http://xn--42cfa4ewb0a0b3fwh.com/imageupload/files/movopixalafexa.pdfIn PDF document text
    • https://kotypsy.pl/ckfinder/userfiles/files/befalaxitala.pdfIn PDF document text
    • https://1tlstar.com/storage/uploads/files/17268018225.pdfIn PDF document text
    • https://generalaudit.pl/eurostyl/photos/file/51795929811.pdfIn PDF document text
    • https://millersexpress.com/userfiles/file/45178832643.pdfIn PDF document text
    • http://synowka.pl/galeria/file/9712814972.pdfIn PDF document text
    • http://miskolciharsona.hu/pictures/file/gexadopifinowozejafu.pdfIn PDF document text
    • https://securitydm.eu/slicice/file/49855753027.pdfIn PDF document text
    • https://horgaszvelem.hu/ckfinder/userfiles/files/novun.pdfIn PDF document text
    • http://jandebruijn.com/uploadimages/files/mulikubulafodumepap.pdfIn PDF document text
    • https://messianic.live/wp-content/plugins/super-forms/uploads/php/files/89621ca66db0507648b6ff33530fc648/jezuvuxotemidavejelo.pdfIn PDF document text
    • http://vip-cond.ru/userfiles/file/16549422646.pdfIn PDF document text
    • http://sinostandards.net/upload/files/mosojozofuduxipiwatukoliz.pdfIn PDF document text
    • http://aluminial.pnh.pt/js/ckfinder/userfiles/files/71633366837.pdfIn PDF document text
    • https://arihantgranites.in/wp-content/plugins/super-forms/uploads/php/files/9687d6a1250de34933ffdad11dda613a/nakawobadapejefu.pdfIn PDF document text
    • http://rehahomecare.com/upload/editor/files/suvozefuwo.pdfIn PDF document text
    • https://www.liftechforklifts.com.au/application/third_party/ckfinder/userfiles/files/famugukoderesojajelunopif.pdfIn PDF document text
    • http://zoldjogsi.hu/uploads/files/ketebarixutekegus.pdfIn PDF document text
    • https://albawadiroad.com/userfiles/files/87927264925.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=download+fun+race+3dPDF link annotation
    • 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_off0000cee6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEE6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e6fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6FD 10468 bytes
SHA-256: d8a2db471c7931b94565f5d8bacb9b81f85694abac73c80ed7bca5a4af2a0208
font_02_sfnt_off0000fefb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEFB 21580 bytes
SHA-256: ce801a94a88c3b1b16aa372f120ddcabc3091be56e5f5c29a527031dd2a08497

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