Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e912d7d2653b3cb…

MALICIOUS

PDF

62.3 KB Created: 2021-06-20 08:52:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: b167d474b997abcb223130fd43be2f5b SHA-1: 1c7644ec6ade09efcbadae6be33acc5554b2048c SHA-256: 0e912d7d2653b3cbd7fbcf198b1285912c4c05fcb8317860842c944e9872c37a
154 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs that point to compromised websites and disposable hosting, indicating a link farm designed for malicious redirection. The ClamAV detection and ML classifier further support its malicious nature. The primary purpose appears to be directing users to potentially harmful content, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8152

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 http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ffa86417d5---nonepureworafa.pdf In PDF document text
    • http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607e28d950e1e---1265971769.pdfIn PDF document text
    • https://nezrenpin.com/calisma2/files/uploads/84128411437.pdfIn PDF document text
    • http://dui-antidote.net/images/userfiles/file/pobazabomitogewikokawoxel.pdfIn PDF document text
    • https://superpart.com/files/norizavukavivileberuvu.pdfIn PDF document text
    • http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/lqg9qg257g05aetoievd9s5fa5/32949969754.pdfIn PDF document text
    • http://www.magicapro.it/wp-content/plugins/formcraft/file-upload/server/content/files/160993bf5a9ccf---75227536165.pdfIn PDF document text
    • https://reparationmobile.net/userfiles/file/vijimusimiw.pdfIn PDF document text
    • https://airbays.com/userfiles/file/kenal.pdfIn PDF document text
    • http://shuswapladystriders.ca/userfiles/file/zenexos.pdfIn PDF document text
    • http://accessiblevehicleservices.com/userfiles/file/33115617963.pdfIn PDF document text
    • https://fobiy.net/wp-content/plugins/super-forms/uploads/php/files/eb45a0097a8f47af9cef9d4935b8a3c1/gigenelajabudi.pdfIn PDF document text
    • http://www.cheapmotorcycleinsurancepa.com/wp-content/plugins/super-forms/uploads/php/files/p20ig3li09kqdfv553v7ta5o95/raxaxepazepazizolizesuxu.pdfIn PDF document text
    • http://bfr-bialapodlaska.pl/userfiles/file/negudusodonesojav.pdfIn PDF document text
    • http://www.risingstars.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1606f0c368e70a---ruzojo.pdfIn PDF document text
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/rii1or7cktjqgblvpmkvj9of34/23310613597.pdfIn PDF document text
    • https://backcountryplayground.com/wp-content/plugins/super-forms/uploads/php/files/392036100240b3b1276444b81de8b20a/12124400094.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=physics+for+students+of+science+and+engineeringPDF link annotation
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB49 5352 bytes
SHA-256: 5bce9a0b0997fdcabd67cbf5057459628bf1dbf0929df776c11495a191834cb6

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