Malicious PDF — malware analysis report

Static analysis result for SHA-256 14ef40d6b152050c…

MALICIOUS

PDF

86.6 KB Created: 2021-09-04 09:59:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-01
MD5: a73fd7bab08edaf32b98b34365a5300c SHA-1: 1ea6fb63d4f1abd3e833f6880243295804770749 SHA-256: 14ef40d6b152050c99ed96c6b52e1dcf41ac7f691c25531e013b38300212f281
126 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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 https://philabc.ru/uplcv?utm_term=emerson+drive+commander+sk+manual PDF link annotation
    • http://poltinik.ru/userfiles/file/29966434551.pdfIn PDF document text
    • http://kubabus.cz/novy-web/upload/file/mojogutopoju.pdfIn PDF document text
    • http://www.absolutecateringla.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f5eef34587---42015137474.pdfIn PDF document text
    • http://www.rosabrockenhaus.ch/ckfinder/userfiles/files/77836105493.pdfIn PDF document text
    • https://ecohort.info/userfiles/files/12415928012.pdfIn PDF document text
    • http://skoleniridicu-online.eu/ckfinder/userfiles/files/vabirotuperoz.pdfIn PDF document text
    • https://cualuoihoanmy.com/uploads/userfiles/file/3922310901.pdfIn PDF document text
    • http://sitoad.com/bbqjoekey/files/202106161314439544.pdfIn PDF document text
    • http://tcsm62.org/uploads/news/file/kodifelilibibasiwob.pdfIn PDF document text
    • https://meganimal.pt/site/upload/file/35157654341.pdfIn PDF document text
    • http://lovec.bg/root/ckfinder/userfiles/files/83276198724.pdfIn PDF document text
    • http://hbtsap.com/Upfiles/news/file///vitozaduzapoxemumiku.pdfIn PDF document text
    • http://ibb-online.ru/f/file/wativi.pdfIn PDF document text
    • https://irish-setter-zucht.info/ckfinder/userfiles/files/vemofarejatinafeka.pdfIn PDF document text
    • https://carparts-fixture.com/file/file/55086464754.pdfIn PDF document text
    • http://boxethai38.com/upload/file/51279542949.pdfIn PDF document text
    • https://www.siemers-deutschmann.de/wp-content/plugins/super-forms/uploads/php/files/rsl2v83sea7eeq7vt52go4j3i4/13178736323.pdfIn PDF document text
    • https://louvre.lv/res/wysiwyg/file/zumixegekijiladusasade.pdfIn PDF document text
    • http://okna-stv.ru/userfiles/files/65213994698.pdfIn PDF document text
    • https://consultingexpert.eu/fckeditor/userfiles/file/103235152.pdfIn PDF document text
    • http://akcjonariusz.com/UserFiles/file/rodax.pdfIn PDF document text
    • http://architettotamborra.eu/userfiles/files/74256935054.pdfIn PDF document text
    • 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_off0000e97b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE97B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001018d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1018D 19380 bytes
SHA-256: 46b06939aaa3fb75774306cae06a58514c5740dad24e4cdbd0e37497556c44aa
font_02_sfnt_off00013482.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13482 10672 bytes
SHA-256: 9c68742afd15c110dfc79b7ef2fc7d1bb3321c03d1b892f148401f1f2aebd842

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