Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd686e78357d039f…

MALICIOUS

PDF

67.8 KB Created: 2021-09-02 04:58:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 5a420ba3ba467c18ce6590a1127e68bd SHA-1: d7f24a7b787f021f77109e2a18fdde2261a31d2b SHA-256: dd686e78357d039f86f1d459401ea68ed5732451289a4acefd057a95d0b41b1c
154 Risk Score

Malware Insights

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

The PDF contains a link farm pointing to multiple compromised WordPress sites, a common tactic for distributing malware or conducting phishing. The ClamAV detection and ML classifier further support its malicious nature. The embedded URLs are likely part of a campaign to lure users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6322

Heuristics 5

  • 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
  • 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 http://www.megasaludips.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d2ff9db2808---26001023006.pdf In PDF document text
    • https://www.endthestigmacounselling.com/wp-content/plugins/super-forms/uploads/php/files/2m8mh0l5imh581n3qg374b07ba/kozepamidogobo.pdfIn PDF document text
    • https://deedpoll.sg/wp-content/plugins/super-forms/uploads/php/files/0b1be8857a2f34b53e985e25f4434c76/tovozudakonovedivagagu.pdfIn PDF document text
    • http://agarimo.com/archivos/archivos/74868923930.pdfIn PDF document text
    • https://alusol-kw.com/ckfinder/userfiles/files/7265642907.pdfIn PDF document text
    • http://360mart.net/uploads/files/mujudipagopelinetupo.pdfIn PDF document text
    • http://victorylimo1.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a520bd68846---70504597314.pdfIn PDF document text
    • http://neodev.space/wp-content/plugins/formcraft/file-upload/server/content/files/1609b6b8866c99---tubuponokasejuvoturufifo.pdfIn PDF document text
    • http://kyea.org/imageuploads/67816341668.pdfIn PDF document text
    • https://hotelristorantenovecento.it/wp-content/plugins/super-forms/uploads/php/files/cb44a5f352e81d1f6485170af089cfb0/xaximod.pdfIn PDF document text
    • http://sam-global.info/files/file/lagosedakonezezemo.pdfIn PDF document text
    • https://nslogisticservice.com/userfiles/files/10497012985.pdfIn PDF document text
    • https://admonks.ru/wp-content/plugins/super-forms/uploads/php/files/638ed91f699613863e114419bbcb4597/31453633155.pdfIn PDF document text
    • http://osheamaloneynylaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/15417783654.pdfIn PDF document text
    • http://tulga.ru/editor/files/wireresikipupij.pdfIn PDF document text
    • https://nepalipublisher.com/ckfinder/userfiles/files/41681697393.pdfIn PDF document text
    • http://babamoleskine.com/files/file/75638031847.pdfIn PDF document text
    • https://alternativecarrepair.com/userfiles/file/72155849718.pdfIn PDF document text
    • https://newoptic.mn/uploads/files/2262416911.pdfIn PDF document text
    • http://thestarbusan.net/FileData/ckfinder/files/20210818_FD3C3458F5F47AD6.pdfIn PDF document text
    • http://pinturasoltra.com/images/slider/files/puzamagumiwivibupu.pdfIn PDF document text
    • http://bukharaatlanta.com/sites/default/files/file/40018533275.pdfIn PDF document text
    • http://broadviewlibrary.org/uploaded_bvlib/file/rodaruxokef.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=hangout+app+for+androidPDF 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_off0000cdf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDF7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e609.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE609 17704 bytes
SHA-256: cf752d16f273891d886cf1d54891bbd8b9caef6e3600a9f3bfef2bdcfc16b37e

Open this report in the interactive analyzer, or submit your own file for analysis.