Malicious PDF — malware analysis report

Static analysis result for SHA-256 060cf6b2700f7968…

MALICIOUS

PDF

84.7 KB Created: 2021-06-25 09:58:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fd411feeeabb6c2df7390a8811cf8c88 SHA-1: 6f274d9b83237ded33f79f10ec61c2f5c8ec8c44 SHA-256: 060cf6b2700f7968d49fb92939277dab73d143d85cf49107dd9d4fe873120c11
156 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a link farm pointing to compromised websites, likely intended to redirect users to malicious content or downloads. The document body, though heavily obfuscated, suggests a lure related to pirated media downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.highlandmetals.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1606ee55d5c86f---55151619795.pdf
    • https://dongytueduc.com/wp-content/plugins/super-forms/uploads/php/files/qafptasl4vnl2ilb7i60n2e67q/zufif.pdf
    • https://too.kg/wp-content/plugins/super-forms/uploads/php/files/a78ea5512a8de1ed8f5ad707b1bb7297/lokoxaguganudukome.pdf
    • http://otvorene-srdce.sk/userfiles/file/gesedek.pdf
    • http://koopmankennedyfeller.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/dorajedinijopefej.pdf
    • http://bike-aholic.com/UserFiles/file/xajubetobeditetovav.pdf
    • https://alice-immo.com/userfiles/file/bewazapaxidego.pdf
    • https://artsketch.ru/wp-content/plugins/super-forms/uploads/php/files/354acdce085bf09c184b98322aabc4e1/demubezelesemexefumuto.pdf
    • http://ankaser.com/userfiles/file/91139388716.pdf
    • https://www.m2asolutions.com/wp-content/plugins/super-forms/uploads/php/files/de13c3f8d9501e38fed007c9743477c7/febirikegeku.pdf
    • http://www.tsssport.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607abbb953776---62322424847.pdf
    • http://xn--9p4b29dncp2cc6y.net/upload/fckeditor/file/87795264620.pdf
    • http://itaindustrial.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609869bc0d953---45819567738.pdf
    • http://drapikowski.pl/uploaded/fck_files/file/tesolazel.pdf
    • https://him-home.ru/wp-content/plugins/super-forms/uploads/php/files/859f97ee4b84da159b7454a1cea19b6b/29928182673.pdf
    • https://www.reflectionuk.com/wp-content/plugins/super-forms/uploads/php/files/qpklomfm6kpveedd4c3d3dk5a4/63735424849.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=fast+and+furious+8+tamil+dubbed+1080p+download
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f3f7.bin
071334080c324865d22cec939d99f236aad22ba76032d9fa0214152759ae01ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF3F7 5760 bytes
font_01_sfnt_off0001078e.bin
c0f8edecc75f04437d537597014ec2ce86db486700a9d7d7b6693ca0e07dd49d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1078E 11888 bytes
font_02_sfnt_off0001302e.bin
a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1302E 16204 bytes

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