Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ed802dc22d42d9e…

MALICIOUS

PDF

73.1 KB Created: 2021-07-02 17:47:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: eb53dc1c36d9c71922f7c85fb0a87199 SHA-1: e694992dbbdffd34bed1c92dbc146e60d0948ca1 SHA-256: 0ed802dc22d42d9e74ce92693fae07b3d4c57e6f924491f51371c3d69a9525a7
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, with numerous URLs pointing to compromised CMS uploads and disposable hosting, likely to redirect users to malicious content. No scripts were extracted, but the overall structure suggests it is designed to exploit users through deceptive links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160d689e1341af---73022953548.pdf
    • https://lashmakerpro.it/wp-content/plugins/super-forms/uploads/php/files/hnfrqrrd8senuelhnhec3pbg92/karobimozujizeg.pdf
    • https://betentour.com/sites/default/files/file/22092086806.pdf
    • http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609804d4db63a---berutajamilijatidij.pdf
    • http://atomleasing.ru/media/File/sexefixera.pdf
    • https://corghialberti.it/file/70931257289.pdf
    • http://koreanhotpot.com/uploads/files/76226124314.pdf
    • http://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a99a0965084---89279015234.pdf
    • http://sjhrz.com/images/upload/File/15548572682.pdf
    • http://rungrawin-itt.com/userfiles/files/98373687236.pdf
    • http://naturallabs.fr/userfiles/file/21981884017.pdf
    • https://www.inkfactory.pk/wp-content/plugins/formcraft/file-upload/server/content/files/1608b9bc9b136b---zutinofabekomazegagunakit.pdf
    • http://whsclass1968.com/clients/f/f8/f849445bb2fb8f42e7c863050dc1ba38/File/72194914256.pdf
    • http://henca.com/files/details/file/zizanoxe.pdf
    • http://xn--or3bi2da319p.com/upload/fckeditor/file/boxinoxorofirixakexek.pdf
    • http://actionelectric.pt/www/wp-content/plugins/formcraft/file-upload/server/content/files/160ce9578e762f---9186608021.pdf
    • http://lavera.it/wp-content/plugins/formcraft/file-upload/server/content/files/160cfb65d5e3a2---muzajupalezoxegonigu.pdf
    • https://www.certificagreen.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca37974d01---xuwex.pdf
    • http://abwplazaview.com/uploads/files/gexafelokag.pdf
    • https://bdblue.com/ckfinder/userfiles/files/71459350204.pdf
    • https://orkhaconstruction.com/wp-content/plugins/super-forms/uploads/php/files/76c295fqt68fua4p0vdsabi14s/wazogujitika.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=neo+angelique+abyss+season+2+episode+1
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bd40.bin
712d362752ee090f1c0b57da35f7d30adbec5ae40ce231456007407eec37f4f8
pdf-font-stream PDF embedded font (sfnt) at offset 0xBD40 15880 bytes
font_01_sfnt_off0000e622.bin
21ef89e452b0f01d1b5780bfda365a18df52cafbd812d9ed7899e0f8bc9135d7
pdf-font-stream PDF embedded font (sfnt) at offset 0xE622 11016 bytes
font_02_sfnt_off0000ff35.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xFF35 16792 bytes