Malicious PDF — malware analysis report

Static analysis result for SHA-256 297ecdef38e203f9…

MALICIOUS

PDF

96.0 KB Created: 2021-08-13 07:31:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-02
MD5: 981ea3f061022de0586bae9f36fdf7a9 SHA-1: ed41b2778fcea8b051f7b57e65d0ab44c9c2a4d5 SHA-256: 297ecdef38e203f920c5363f81ef2811fdb181b30c7992f552e4944de764b8cc
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier clean score 0.1353

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
  • 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
  • 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://laborke.ru/uplcv?utm_term=tekken+blood+vengeance+download+in+hindi PDF link annotation
    • https://www.ideaklinikbakirkoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d85a8b5fe2---97466848743.pdfIn PDF document text
    • http://lukinserv.hu/file/61278089292.pdfIn PDF document text
    • http://palyavalaszto.hu/teszt/upload/file/82478010982.pdfIn PDF document text
    • http://jockmurray.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087734713c9f---gufodofedefaxikutudise.pdfIn PDF document text
    • https://alakharia.com/public_html/userfiles/file/polojosadubik.pdfIn PDF document text
    • https://pacie.vn/web/uploads/files/jelabageman.pdfIn PDF document text
    • http://mognational.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096893d91e21---woredakufasakexo.pdfIn PDF document text
    • https://www.rowtheerne.com/wp-content/plugins/super-forms/uploads/php/files/11698378805a7b46eadb4be993eef400/nipokubobukog.pdfIn PDF document text
    • https://www.albispanaderia.com/wp-content/plugins/super-forms/uploads/php/files/89425a4ca234c2bc0b8c982eab8ac984/75613211809.pdfIn PDF document text
    • http://assushop.com/userfiles/assushop.com/file/lekiniluli.pdfIn PDF document text
    • http://asesoriagarpe.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e27b6ff2dfa---44964073750.pdfIn PDF document text
    • https://bilegt.mn/userfiles/files/51325484543.pdfIn PDF document text
    • http://htwy.com/upload/file/44594482948.pdfIn PDF document text
    • https://stratasphere.online/userfiles/file/87987759722.pdfIn PDF document text
    • http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/160929de65f95c---jewiditid.pdfIn PDF document text
    • https://www.certificagreen.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cb1fb39f03a---51169016365.pdfIn PDF document text
    • http://uralinteh.com/uploads/files/kowobu.pdfIn PDF document text
    • https://toptenstudy.com/upload/files/BodyFile__60B26B00367D8.pdfIn PDF document text
    • http://standdominica.org/files/files/gapaj.pdfIn PDF document text
    • http://daydala.com/userfiles/file/43817867721.pdfIn PDF document text
    • http://savalis.ru/userfiles/file/88868479673.pdfIn PDF document text
    • http://ukkies.be/userfiles/file/99895143197.pdfIn PDF document text
    • https://www.growxponential.com/wp-content/plugins/super-forms/uploads/php/files/ocef1rufso3cc1u9itnm76lg8r/nafikagukos.pdfIn PDF document text
    • https://deedpoll.sg/wp-content/plugins/super-forms/uploads/php/files/0ec466ac1a170804902ceb84df5410b9/livifiwotuwilifev.pdfIn PDF document text
    • https://www.tessilgiada.it/wp-content/plugins/formcraft/file-upload/server/content/files/160762a1dd044c---16992739314.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off00014f83.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x14F83 17960 bytes
SHA-256: 52acac7be7da9e9654129c6cb5d02be298248702114fe0ea1bf7dfd891aae096
font_00_sfnt_off0000e680.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE680 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fe8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE8D 2296 bytes
SHA-256: 0d91b93c30cdb4b9fcc5287ef31e0f6d3b75050094e35c3303e90e7f2c1d387e
font_02_sfnt_off00010888.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10888 28952 bytes
SHA-256: 3ac69d0bb82e9e9275fc826afa694d4c7560ce9f936a214e65633a8ed38032f4
font_04_sfnt_off00016b84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16B84 10628 bytes
SHA-256: 8c36d0764a4b809fd3a7f0ba2b698874308368c712f03fba22a6f27abb5334c4