Malicious PDF — malware analysis report

Static analysis result for SHA-256 7945a19ed1b06331…

MALICIOUS

PDF

72.1 KB Created: 2021-09-05 13:13:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: ebdb0dbfab7f17f4b98f37d9b770a6b1 SHA-1: 7ace6f1785b90912c4660096aa20c1400ae07bd5 SHA-256: 7945a19ed1b06331abfa8654159a9c96d17be686b22dff6a786522ff68c848db
124 Risk Score

Malware Insights

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

The file was detected by ClamAV as Pdf.Phishing.Trojan. Static analysis revealed it functions as a link farm, with numerous embedded URLs pointing to compromised WordPress sites and disposable hosting. These links are likely intended to redirect users to phishing pages or download further malicious content.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4326

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://praward.tw/wp-content/plugins/super-forms/uploads/php/files/e6f5c7adc5cb9f10ce8957282dae0da5/63424111766.pdf In PDF document text
    • https://www.hotel-palladium.gr/wp-content/plugins/super-forms/uploads/php/files/81iiimmohu60v6pd17phppiqms/difogufemozopad.pdfIn PDF document text
    • https://lorenzonimmigrationlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c0b9e8be56e---8702820572.pdfIn PDF document text
    • http://ourpreferred.com/userfiles/files/xivojali.pdfIn PDF document text
    • https://smoothnomad.com/wp-content/plugins/super-forms/uploads/php/files/lc3qgl520h5abhqk2uujusn24l/fetopapizizomofasidapafa.pdfIn PDF document text
    • https://beatmuellerfoto.ch/userfiles/files/83178258994.pdfIn PDF document text
    • https://baxsporthorses.com/userfiles/file/rukirokobitem.pdfIn PDF document text
    • http://andreevmag.com/wp-content/plugins/super-forms/uploads/php/files/48fde0c6f26ce0de403be577d704fcf8/vinowupu.pdfIn PDF document text
    • http://worldcar.jp/userfiles/files/bolupiruda.pdfIn PDF document text
    • http://xn--eyt274i.com/upload/files/basafonegib.pdfIn PDF document text
    • http://radiosalsa.fr/php/rs/filesupload/file/37797518004.pdfIn PDF document text
    • https://nestuby.com/userfiles/file/29016197828.pdfIn PDF document text
    • https://comesa.com.pe/wp-content/plugins/super-forms/uploads/php/files/56699f4feb832f0bbb0c4f4c31d76a0e/nodikuxeleserovoz.pdfIn PDF document text
    • http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/16121a971a48f3---68046689559.pdfIn PDF document text
    • http://opusbiz.kr/data/editor/file/212016141860f081673a887.pdfIn PDF document text
    • http://gurolmumcu.com/userfiles/file/67170892911.pdfIn PDF document text
    • http://studioriggio.it/userfiles/files/fexopinolufivikavusetata.pdfIn PDF document text
    • http://ticketsperiodico.com/galeria/files/karovami.pdfIn PDF document text
    • https://safecampus.in/cmsCart//upload/file/sojomavamiwebigetega.pdfIn PDF document text
    • http://globaltruthmediagroup.com/clients/a/aa/aa8380eac451876ae6ab993bf3a720d6/File/patifafakaje.pdfIn PDF document text
    • http://biplano.eu/userfiles/files/34857345596.pdfIn PDF document text
    • http://brodart01.com/wp-content/plugins/super-forms/uploads/php/files/b397hrscdgm3b6mt8mtk9lc7k2/14065884288.pdfIn PDF document text
    • https://mehreganimaging.ir/images/upload/files/18374638700.pdfIn PDF document text
    • http://vidol.nl/userfiles/file/vejituzivu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=teclast+tbook+10s+manualPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9C8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000101df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101DF 10668 bytes
SHA-256: 6ce6f847ff0c57592a655f3d0ef96cff3da6611588989f5e36a4a1f0ca62883f

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