Malicious PDF — malware analysis report

Static analysis result for SHA-256 340d1a244d1475b6…

MALICIOUS

PDF

76.9 KB Created: 2021-09-24 04:43:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 749c01d5a511024e7aee1a5d67ab1ca9 SHA-1: 3b13d228799b1dfd9133504fac7fb2e95f78746e SHA-256: 340d1a244d1475b6929acab175802162619fb65088f580824422f99bdbce2b57
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a link farm with numerous URLs, many of which are hosted on disposable domains, suggesting a phishing or malware distribution attempt. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports this assessment. Although no scripts were explicitly extracted, the structure and URL patterns are indicative of a malicious document designed to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4750

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://suacuasathcm.com/uploads/files/65516891020.pdf In PDF document text
    • http://vnationwide.com/userfiles/files/93899103700.pdfIn PDF document text
    • http://eakqshop.com/ckfinder/images_store/files/79105858341.pdfIn PDF document text
    • http://franklcalabreseattorney.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/24088018573.pdfIn PDF document text
    • https://eksiliotomotiv.com/upload/ckfinder/files/xorutafusiwijuzakiva.pdfIn PDF document text
    • http://quaisetoiles.fr/img_pages/file/41511656302.pdfIn PDF document text
    • http://baove24h.info/upload/files/20081825979.pdfIn PDF document text
    • http://coconut.hu/userfiles/file/nebav.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/16146e48fd0476---6861214102.pdfIn PDF document text
    • http://optimaglobal.net/ckupload/files/dumoguzuwude.pdfIn PDF document text
    • https://cgeminfos.ma/upload/file/13717998163.pdfIn PDF document text
    • http://woodlandhills.ilovepokebar.com/uploads/files/74068978317.pdfIn PDF document text
    • http://cellesekorea.com/ckupload/files/niwefuloliza.pdfIn PDF document text
    • http://sosnovgeo.ru/userfiles/file/35096388466.pdfIn PDF document text
    • http://pobierzplik.pl/uploads/files/53703359287.pdfIn PDF document text
    • http://synphabase.ch/upload/file/sezekiwusomime.pdfIn PDF document text
    • http://dianacb.cz/userfiles/file/nasavepiwabunoja.pdfIn PDF document text
    • http://dasbluemchen.com/wokosodu.pdfIn PDF document text
    • https://projetovm.com/uploads/files/40017503954.pdfIn PDF document text
    • http://anhuizpyy.com/upload_fck/file/2021-9-8/20210908100013580442.pdfIn PDF document text
    • https://eastmangroup.org/ckfinder/userfiles/files/pudurutokutowukelakewir.pdfIn PDF document text
    • http://vanillasky-ch.com/images/files/doturatug.pdfIn PDF document text
    • http://smm-mm.com/uploads/news_file/salisakiligodoriwidodofo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=download+stickman+legacy+mod+apkPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dbb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBB7 17528 bytes
SHA-256: 57db003a52f49d3a3f7ee42c0a929adf9ea052610a83cdc5b3814fe8a516e3ca
font_01_sfnt_off00010834.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10834 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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