Malicious PDF — malware analysis report

Static analysis result for SHA-256 024d96942a442e7c…

MALICIOUS

PDF

89.5 KB Created: 2021-07-02 08:19:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: c6ab84043b0b751f74cc8d53f954c323 SHA-1: f7ccad29df5134ebeac69d606769819eba47087b SHA-256: 024d96942a442e7cacfb5ebbdfc9a5309ebafcb637549e3f3c90764251755382
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for Pdf.Phishing.Trojan. The file contains a link farm pointing to compromised WordPress upload storage and other disposable hosting, suggesting an attempt to redirect users to malicious sites. The presence of numerous unknown URLs further supports this phishing or malware distribution vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://skazkavdom.com/wp-content/plugins/super-forms/uploads/php/files/62f0dc3863146ed7bd3a04c28070ae6f/megotowevefin.pdf
    • https://ankaratemizlikcim.com/depo/sayfaresim/file/lubovajubesubepidil.pdf
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16082701b0b49e---labuboxoposefotitugiwote.pdf
    • http://aarogyamedico.com/userfiles/file/tiganogiz.pdf
    • https://yastudio.net/wp-content/plugins/super-forms/uploads/php/files/1f1c6dfa82f45b26f8e23714bfdea8a5/dovexolumuvurupazume.pdf
    • https://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075c573d2169---bixesiwudoxutabajapuxoz.pdf
    • https://sofupingame.com/calisma2/files/uploads/51939721380.pdf
    • http://bezpieczna-strefa.pl/wp-content/plugins/super-forms/uploads/php/files/90161cad79c2a04d0c29def50c6a2ff2/6092832319.pdf
    • http://mariamozharova.ru/uploads/files/pexutosigulubof.pdf
    • http://www.webtony.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606ef794763b1---96296526782.pdf
    • http://english-life.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16072dc20e83e4---xumuvij.pdf
    • https://ubranni.com/uploader/files/79011130820.pdf
    • https://masterpieces-mallorca.com/wp-content/plugins/super-forms/uploads/php/files/a79cf89a558aaaae572ad3a64a9faf93/5337844134.pdf
    • http://starrsgazette.com/admin/images/file/93226721787.pdf
    • http://fujavietnam.com/images/Download/popixugokip.pdf
    • http://chupanhnoithat.vn/upload/files/diratorufag.pdf
    • https://mikepromedia.com/wp-content/plugins/super-forms/uploads/php/files/jm3il4185go74rv8jdpgsrf182/9880974397.pdf
    • https://gyn-koe70.de/obrazky/file/59114627496.pdf
    • http://tribo.kz/userfiles/File/90816573233.pdf
    • https://gresathouse.com/wp-content/plugins/super-forms/uploads/php/files/d79d7992c3ab631c9c0987e9b3c1ecde/barepasulisot.pdf
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/61vohlf68irdde18brgrejt483/demalivimaviretizaninu.pdf
    • http://grupomarsamo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c472562167---lavubifivuvaj.pdf
    • https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/f7c7cb0736bc4ae6bf4da3ed4eb2e07a/70402673474.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=how+to+quote+a+novel+in+an+essay
    • 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_off0000fcd6.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xFCD6 16792 bytes
font_01_sfnt_off000114e8.bin
94303ce3b5fcc70a995de6deaf77364fe28223f644bae94c054d5f780fe53e29
pdf-font-stream PDF embedded font (sfnt) at offset 0x114E8 16916 bytes
font_02_sfnt_off000140f4.bin
f9342fe91ef36a91a299e684bd44c53b9b1c9a1fd9dced48a696d1ac78cedd51
pdf-font-stream PDF embedded font (sfnt) at offset 0x140F4 10504 bytes