Malicious PDF — malware analysis report

Static analysis result for SHA-256 e501c60bdd5a4a3e…

MALICIOUS

PDF

65.4 KB Created: 2021-05-05 04:34:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 15c3d66c88f33fcceb002d7b035248f1 SHA-1: 15234e9319c65f1d7e1b079f647e448abf055678 SHA-256: e501c60bdd5a4a3e05b66e9404bd1ca5e46a21e893863c857a5f292a53c24bfc
154 Risk Score

Malware Insights

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

This PDF file was detected as a phishing trojan by ClamAV and ML classifiers. It contains numerous links to external websites, many hosted on compromised CMS platforms, suggesting a link farm designed to redirect users to malicious content. The document body, though heavily obfuscated, contains text related to a '12th temporary mark sheet', indicating a lure for phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9493

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://xn--64-mlcufjjaii0l.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/673a301bd4e5e1599a7473accaa2d60c/27435250071.pdf
    • http://www.gunyagder.org.tr/wp-content/plugins/super-forms/uploads/php/files/shucm9ck3m9g6jbkd6ji6np3j1/zarejavofozutajebinef.pdf
    • http://www.absolutecateringla.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ed68790e6e---duxojapizokagarutebavepe.pdf
    • https://xn--80adj7cxa.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/dfc0871d1dadc7637221164f510b58ff/bajemaxofuxu.pdf
    • https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c3c6e5b6d6---12768633600.pdf
    • https://hoffmanowska.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1607c01909fabc---vojiwezoda.pdf
    • http://atlantichomeportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ef8e22d02d---64397714530.pdf
    • https://www.grecosalesinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a9aad21e7c---97190782893.pdf
    • https://eliteswimmingpoolsinc.com/wp-content/plugins/super-forms/uploads/php/files/e7iu9eoqhur5ikpc28bels2th2/70142248355.pdf
    • http://mko-yug.ru/wp-content/plugins/super-forms/uploads/php/files/e6ae543b736b48f4b1340b5193c9f857/47497556082.pdf
    • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/3f9a503bd30e8f92121509bd0d455088/lolepuvax.pdf
    • https://pablohernandes.com/wp-content/plugins/super-forms/uploads/php/files/bc32e79409c5a4123c02906a82c8415d/funifibazujanepone.pdf
    • https://inlandautorepairmurrietaca.com/wp-content/plugins/super-forms/uploads/php/files/70707b748190886009c24198552eeb9c/9351745976.pdf
    • http://alarcon-v.com/editor_upload_image/file/66228257297.pdf
    • https://growlocals.com/wp-content/plugins/super-forms/uploads/php/files/8827c84d78c68ceadbe709656285c0f4/37586731592.pdf
    • https://www.modianodesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085df5346bf5---terapiv.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=12th+temporary+mark+sheet+2019
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dfd9.bin
fb09dc8522242af585431184fe9fdfe2a1410f7be93376e6d77b4d3c417a9c72		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDFD9 5580 bytes
font_01_sfnt_off0000f29f.bin
43d594362b8e21592f89d73ac26eeeeaa5e48b57a24dc4143b93a8973f25f615		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF29F 5684 bytes

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