Malicious PDF — malware analysis report

Static analysis result for SHA-256 76071e206697b116…

MALICIOUS

PDF

86.1 KB Created: 2021-09-11 09:01:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-04
MD5: c3d1a45e7134d8a317b068e7d31125a8 SHA-1: e60bec0f3d71fdb3ccd1b46b1bafdea797d8c5ff SHA-256: 76071e206697b116587b1ccef8e040166c375f50c3981847d0f059eeacbf17fd
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 0.9985

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://pixomot.ru/uplcv?utm_term=milton+william+cooper+more+people PDF link annotation
    • http://acudrved.com/ckfinder/userfiles/files/mubumedisope.pdfIn PDF document text
    • http://www.wm-meyer.de/meyer/admin/editor/ckfinder/userfiles/files/xufimozizesozupokevivuka.pdfIn PDF document text
    • http://01host.ru/userfiles/files/75534045053.pdfIn PDF document text
    • https://grupahatak.pl/admin/_fck_files/file/wekinevuxo.pdfIn PDF document text
    • http://metamorfozyayincilik.com/userfiles/file/fumagofowemeji.pdfIn PDF document text
    • https://www.champagne-auge-dascier.com/ckfinder/userfiles/files/kajimase.pdfIn PDF document text
    • http://allier.proximeo.com/ckfinder/userfiles/files/ribakikijajotolukexasedul.pdfIn PDF document text
    • http://ulv-fogger.ru/d/files/rubujepuremekafeko.pdfIn PDF document text
    • http://residenceraffaellotorino.com/userfiles/files/taxeligi.pdfIn PDF document text
    • https://triatlonshop.cz/userfiles/file/65456957379.pdfIn PDF document text
    • http://ballarioarchitetti.eu/userfiles/files/fanewenigonadetatur.pdfIn PDF document text
    • http://htk2.altrodesign.eu/ckfinder/userfiles/files/3957657775.pdfIn PDF document text
    • http://www.studiolegalefusimorelli.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613937ded0d29---97766026478.pdfIn PDF document text
    • https://aljazeerahdrilling.com/userfiles/files/ralaxib.pdfIn PDF document text
    • http://m3hotels.com/userfiles/file/buwuwuvotadixisosew.pdfIn PDF document text
    • http://zavalinka.by/var/upload/file/lunifinumugugoroluvonulon.pdfIn PDF document text
    • http://magdrywall.com/project-new/christianbook/upload_images/file/93896323488.pdfIn PDF document text
    • https://vibingvibes.com/userfiles/files/bezemanimepitijuz.pdfIn PDF document text
    • http://sushiosushi.com/uploads/files/lozut.pdfIn PDF document text
    • http://szkolaprzybranowo.pl/ckfinder/userfiles/files/ruzemidatomuxupolapi.pdfIn PDF document text
    • http://ifa-astrologie.de/userfiles/file/16911697409.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_off0000eb4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB4C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001035e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1035E 18312 bytes
SHA-256: a80bb519b013125de9b79f1732a3ec73cc11c489ddfef3100e4a961324fdf0f6
font_02_sfnt_off00013344.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13344 10444 bytes
SHA-256: 6191415c33b9731dfe8a72273c11e7f09e03cffd0a91b3b649119a372bb65526

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