Malicious PDF — malware analysis report

Static analysis result for SHA-256 c14e153a7d135d03…

MALICIOUS

PDF

71.1 KB Created: 2021-09-29 02:18:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: d623334ca661d7362d02997ca96fdced SHA-1: 8b80d1cc71a2c42d853201b70b90e1de38dc80e8 SHA-256: c14e153a7d135d03e27d84275778a35ea3678293527db71e1fcf3bb5c0b8e527
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and ML classifiers indicate a high probability of maliciousness. It contains numerous URLs, many pointing to compromised WordPress upload directories or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9849

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://garglob.ru/uplcv?utm_term=all+that+way+for+love+2011+full+movie+online+free PDF link annotation
    • http://hangquangauto.com/files/sufefafitutojev.pdfIn PDF document text
    • https://calmoinc.com/upload/editor/file/jumew.pdfIn PDF document text
    • https://autosaloncenter.com/uploads/file/wakuvewenuwuvixejojum.pdfIn PDF document text
    • http://lmnn.ru/userfiles/file/lunusuzena.pdfIn PDF document text
    • http://dealershop.es/camarasegovia/userfiles/file/12666782860.pdfIn PDF document text
    • http://sdtr.mdrap.ro/fckeditor/uploads/file/xavuxenegigo.pdfIn PDF document text
    • http://betonkeritesek.eu/Content/files/38119623300.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613741060ad75---desozuvonirevivore.pdfIn PDF document text
    • https://www.blackandwhite-salon.com/wp-content/plugins/super-forms/uploads/php/files/tmp/60857833034.pdfIn PDF document text
    • http://rent-lease-no1.com/userfiles/file/20210926013353.pdfIn PDF document text
    • http://www.atsamuihaus.com/image/upload/File/57058265901.pdfIn PDF document text
    • http://mega-treid.com/userfiles/files/julod.pdfIn PDF document text
    • https://buzascsaba.hu/userFiles/file/27119149010.pdfIn PDF document text
    • http://victorylimo1.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140ff0363aa6---femotofudaleduru.pdfIn PDF document text
    • https://member-amz-seller-system.de/wp-content/plugins/super-forms/uploads/php/files/236e8f0e8bb085b7adbf4f9de15969ca/84379511396.pdfIn PDF document text
    • https://ou-ravda.com/ckfinder/userfiles/files/47000873126.pdfIn PDF document text
    • https://www.xyoaa.org/sites/default/files/files/28033691791.pdfIn PDF document text
    • http://licausi.it/userfiles/files/zikiriwejarosuz.pdfIn PDF document text
    • http://cameradungphat.com/uploads/files/budite.pdfIn PDF document text
    • https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/1614fef2d60631---novaxapedogig.pdfIn PDF document text
    • http://megalabsrl.it/userfiles/files/46108152175.pdfIn PDF document text
    • http://kompassztuki.pl/Image/files/zameloviliwitil.pdfIn PDF document text
    • https://ottopianos.nl/files/tanopikiramuwip.pdfIn PDF document text
    • https://www.isnb.co.uk/wp-content/plugins/super-forms/uploads/php/files/27fb3d8e6737a107433f0c05c0a88c98/5353668596.pdfIn PDF document text
    • https://lostfoundglobal.com/userfiles/file/mofujusokomewujobonejoni.pdfIn PDF document text
    • https://ccveg.org/wp-content/plugins/super-forms/uploads/php/files/4p0a3uh7ohgrqjtko55aqeig7q/43390285310.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_off0000b24e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB24E 16104 bytes
SHA-256: 9537781e7f173ee9e35b5e6b4dc1f074f2897ab05f296bd03e8c9545797300d3
font_01_sfnt_off0000daca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDACA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f2e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2E1 10952 bytes
SHA-256: a39903b01de2ac87b4c8868079f01bc8d53a041269116bd21ed503dd2e6a293d

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