Malicious PDF — malware analysis report

Static analysis result for SHA-256 60ea38207d799a48…

MALICIOUS

PDF

71.0 KB Created: 2021-09-09 00:07:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: a30996c56f60d3bf1eb8d4d0c2d4eecf SHA-1: 8e1ac255e09ca61705ba3f17b5157f5100a26a00 SHA-256: 60ea38207d799a4858f0c51491f45aaa7721e1fbe127989596325811ed95b541
86 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document was flagged by an ML classifier as malicious and contains numerous embedded URLs, many pointing to disposable domains. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a deliberate attempt to create a large number of links on potentially untrusted hosting. While no scripts were explicitly extracted, the structure and URL patterns suggest this PDF is designed to redirect users to malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 5

  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://bretagne.annuaire-regional.com/ckfinder/userfiles/files/36825309373.pdf In PDF document text
    • http://leylasuren.com/images/userfiles/imagefile/5146995092.pdfIn PDF document text
    • https://safetyhanoi.com/userfiles/file/xesinimekofedosoreve.pdfIn PDF document text
    • http://packamate.com/userfiles/97713779674.pdfIn PDF document text
    • http://niezapominajkowo.eu/userfiles/file/merinenabekerosuv.pdfIn PDF document text
    • http://atel-j.nl/uploads/files/2481362999.pdfIn PDF document text
    • http://linza-market.ru/upload/files/36719625615.pdfIn PDF document text
    • http://bitite.lv/media/txt/122/file/zezexusabozotujajudibatu.pdfIn PDF document text
    • http://bluecreator.biz/ckfinder/userfiles/files/52326968343.pdfIn PDF document text
    • http://www.unidacardoso.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16137d51970826---18428790285.pdfIn PDF document text
    • http://studiomalpocher.it/userfiles/files/27197862098.pdfIn PDF document text
    • https://solelane.com/ckfinder/userfiles/files/sizexarogoxaxitotagapewav.pdfIn PDF document text
    • https://bestrecycledautoparts.net/images_i/file/xomakudiruvakukorozimeser.pdfIn PDF document text
    • http://langeline.com/ckeditor/upload/files/91448622970.pdfIn PDF document text
    • http://topliving.sk/userfiles/file/61007661803.pdfIn PDF document text
    • http://nepalbestcargo.com/userfiles/file/putagigusatil.pdfIn PDF document text
    • https://tese.in/ckfinder/userfiles/files/pajebujivuvaxezipurowasa.pdfIn PDF document text
    • http://shlawllc.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/32999920909.pdfIn PDF document text
    • http://rioairporttransfer.com/ckfinder/userfiles/files/49460784938.pdfIn PDF document text
    • https://rm-parketi.si/uploads/dulenumupediretabakiweme.pdfIn PDF document text
    • http://de.ruben.pl/ckfinder/userfiles/files/59525360876.pdfIn PDF document text
    • http://www.dereformasenalicante.com/archivos/files/ladumalelururavokutagono.pdfIn PDF document text
    • https://carmelocuritiba.com.br/ckfinder/userfiles/files/pasinunodedisurugumalila.pdfIn PDF document text
    • https://semangkabiji.com/contents/files/gitogeralozofumasedode.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=ip+puller+for+androidPDF 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_off0000b52e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB52E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000cd45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD45 10276 bytes
SHA-256: 368621e505cc1cb7174cd1036079d9303f1909bed239cea411478834e32051f9
font_02_sfnt_off0000e469.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE469 16356 bytes
SHA-256: 41dc392a5e4110be401f927904aa1269b459a6cff356f01c0c56adab991f4bd4

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