Malicious PDF — malware analysis report

Static analysis result for SHA-256 14e674ea30617b0d…

MALICIOUS

PDF

83.1 KB Created: 2021-09-11 16:45:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 6a64eb0030c0223970f0d991dff82473 SHA-1: 91ddf0bcec56fa4713c70f41322f7bb48bb6ab55 SHA-256: 14e674ea30617b0d7c595ba072c33b7d6b68e53a96d7b9671348250dcad5a42f
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many of which are part of a link farm hosted on disposable domains, suggesting a phishing or spam campaign. The PDF structure and embedded links are indicative of an attempt to redirect users to malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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://nomylo.ru/uplcv?utm_term=carrom+king+best+online+carrom+board+pool+game+mod+apk PDF link annotation
    • http://pol2-simf.ru/userfiles/file/40202193995.pdfIn PDF document text
    • http://hermanosgolbano.com/admin/fckeditor/editor/filemanager/connectors/phpfile/59462589850.pdfIn PDF document text
    • http://mrpokedb.com/uploads/files/93151578353.pdfIn PDF document text
    • https://brunoamaranti.it/wp-content/plugins/super-forms/uploads/php/files/ucdsn3kb80j7lrs5jfk282uj66/57410156034.pdfIn PDF document text
    • http://snp-ent.com/files/fckeditor/file/13150920396139bd41806ab.pdfIn PDF document text
    • http://robalton.es/Albums/images/file///43128845193.pdfIn PDF document text
    • http://zoo-foto.cz/userfiles/file/49195522432.pdfIn PDF document text
    • http://ieltsadd.ir/cache/fck_files/file/69583449902.pdfIn PDF document text
    • http://cesnek-vysocina.cz/UserFiles/File/95342844862.pdfIn PDF document text
    • https://artcorner-fiberglass.com/userfiles/files/97818625086.pdfIn PDF document text
    • http://alfonsoguiggiarchitetto.it/userfiles/files/82390869841.pdfIn PDF document text
    • http://skipjackpoke.com/ckfinder/userfiles/files/dapifijizovojirikeb.pdfIn PDF document text
    • http://kidzcastleschool.com/singhania/downloads/file/fegezonewafokerevutafu.pdfIn PDF document text
    • http://a-daily.jp/app/webroot/contents_img/files/19676983740.pdfIn PDF document text
    • http://moscreen.in/cmsfiles/file/jutot.pdfIn PDF document text
    • http://unitec-egypt.net/userfiles/file/86918590641.pdfIn PDF document text
    • http://polskienarty.pl/data/aktualnosci_imgs/file/dozofeledeg.pdfIn PDF document text
    • http://weilandvloeren.nl/fckimages/lokedoxi.pdfIn PDF document text
    • http://automozg.by/upload/editor/files/97414039486.pdfIn PDF document text
    • http://carsonpokebar.com/uploads/files/17056857710.pdfIn PDF document text
    • https://www.peltonfell.org.uk/ckfinder/userfiles/files/85183696155.pdfIn PDF document text
    • http://taiwan-casters.com/userfiles/file/tuxotogapurajavabimux.pdfIn PDF document text
    • http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/1613add5b78ad7---makozuveneditab.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000daf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAF3 18432 bytes
SHA-256: d6cb6b6dce8445d82323551feb23fbbf549a86aff0e7768c0464266094939f94
font_01_sfnt_off00010aca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ACA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000122e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122E1 11120 bytes
SHA-256: 8c472dc5088fd16c3fa8a6b65ba4fede3a758a68b6ea5b8277e368ef9c9d3f1f

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