Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed01d460f37f52f3…

MALICIOUS

PDF

62.5 KB Created: 2021-09-14 04:51:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: fb4ade8b6b6c2a9e177c99eba9616ae7 SHA-1: 4d5f1f1c71cd2065b3ede918581972dcd59a97b2 SHA-256: ed01d460f37f52f3fab4dbcad6088108e1e5c32bf9ea4646db33ae4184b89e07
124 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 embedded URLs pointing to other PDF files, indicating it functions as a link farm. The heuristic PDF_SEO_DISPOSABLE_LINK_FARM further supports this, noting the presence of many links on disposable hosting, suggesting a tactic to distribute malicious content or phish users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7260

Heuristics 4

  • 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
  • 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://swiz.eu/files/editor/97198229670.pdf In PDF document text
    • https://frigosztufi.ro/ckfinder/userfiles/files/pixujisuxewunamomesafi.pdfIn PDF document text
    • http://ventexevent.se/uploads/file/384316270.pdfIn PDF document text
    • http://audiencefertilization.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/38578897106.pdfIn PDF document text
    • http://axiomestates.com/userfiles/file/xibawile.pdfIn PDF document text
    • http://rgn2u.com/userfiles/files/mujobo.pdfIn PDF document text
    • http://cke.hk/userfiles/15426948932.pdfIn PDF document text
    • http://www.phonefixcomo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612fa9697c8af---53828642650.pdfIn PDF document text
    • https://luxm.pl/userfiles/file/42560190744.pdfIn PDF document text
    • http://hoteldanang.vn/uploads/images/files/fizemu.pdfIn PDF document text
    • http://cl-pub.com/files/files/3911259749.pdfIn PDF document text
    • https://giritrademark.com/content_files/files/xuravog.pdfIn PDF document text
    • http://soc-in.com/data/media/files/3823087939.pdfIn PDF document text
    • http://ageofwonders.buka.ru/sadm_files/madegisafemewewerasif.pdfIn PDF document text
    • http://protetyka-lublin.com/images/wyswig_images/file/tiratawesegisatowu.pdfIn PDF document text
    • https://miet.hu/kepek/26229554293.pdfIn PDF document text
    • https://dermatologie-chamonix.com/userfiles/file/60571467817.pdfIn PDF document text
    • http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d4a6ec2f7d---lozisuganixovemutekopi.pdfIn PDF document text
    • https://publicbridge.pl/userfiles/file/zagegirazomatufuvobepi.pdfIn PDF document text
    • http://airelimpio.mx/img/editor/file/zejujuwowerobubutibo.pdfIn PDF document text
    • http://www.peritaonline.es/ckfinder/userfiles/files/zilotojewifopi.pdfIn PDF document text
    • http://beta-rc.com/upload/files/meminaxabateje.pdfIn PDF document text
    • http://becucci.it/userfiles/files/52255934129.pdfIn PDF document text
    • http://louisamerino.com/userfiles/file/24918274233.pdfIn PDF document text
    • http://angelojrobles.com/admin_initial_test/userfiles/file/sipibevijemetisapo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=waldain+ke+liye+dua+in+englishPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c91c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC91C 10508 bytes
SHA-256: d3e896fb33ec17bc5a43aa5ecadad4ce0e7d71c58273ed20bd285ff27795bd79

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