Malicious PDF — malware analysis report

Static analysis result for SHA-256 a68adb57de4cccc2…

MALICIOUS

PDF

197.5 KB Created: 2021-06-12 05:12:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d8959b0c05de682db0d8464212181f6 SHA-1: 882548010faf0f46d8d553674e69c56ce804a813 SHA-256: a68adb57de4cccc2e67ec34025f9ce7c1f6bd9f6ded68118891efdf4a85f08ae
166 Risk Score

Malware Insights

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

This PDF document employs an advance-fee scam lure, presenting itself as a lottery or prize notification to trick users into downloading further malicious content. The presence of multiple URLs pointing to compromised WordPress sites suggests a distribution network designed to host and serve the malicious payload. While no scripts were directly extracted, the PDF structure and heuristic firings indicate a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.
  • 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 https://krisoc.ru/uplcv?utm_term=ninjago+out+of+the+fire+and+into+the+boiling+sea
    • https://airshow-bg.com/file/gozezex.pdf
    • http://ngpsusa.com/wp-content/plugins/super-forms/uploads/php/files/5rvvd8t82lacrov4i3k8om5lpi/82448467419.pdf
    • https://www.histoiresdegroupes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608397cc0397b---zezunufa.pdf
    • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/d5f349f42474ee24e41642e0d4ee3392/33566038094.pdf
    • http://subventionsbetrug.de/wp-content/plugins/super-forms/uploads/php/files/dalvubmjj7l6f4onhqjrvdpue4/53658390365.pdf
    • https://www.isgs.org/wp-content/plugins/super-forms/uploads/php/files/d3b45959516ffde2a7fdd0a6624e57b0/46125682984.pdf
    • https://www.acptechnologies.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f5952d6c73---dawizenibuvor.pdf
    • https://www.andrecampbell.ca/wp-content/plugins/super-forms/uploads/php/files/b04d7fe2d0eaae137f4960a59f547281/80249393303.pdf
    • http://qianlong99.org/ckfinder/userfiles/files/nazafimoriz.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6821e76b83---zagivetememagap.pdf
    • https://poolpoint.be/uploads/file/71527098679.pdf
    • https://www.msolartop.cz/wp-content/plugins/formcraft/file-upload/server/content/files/160a05b1263393---5840430134.pdf
    • http://vaughanreunion.com/clients/7/7c/7cfe0b8ff6d5e3136a6575a9b258a09c/File/nolokibabitelikevinovevop.pdf
    • http://pvsystreports.com/wp-content/plugins/super-forms/uploads/php/files/0hfi6apsoju58sn38l948sanf6/nasinakenesesipuvebadimub.pdf
    • https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16084b52be1497---8626457755.pdf
    • https://fedico.ca/upload/editor/file/33074113358.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002cb38.bin
9ad39e08f5ccb57055e87e0797788c6d37c76af87ecf6d82ea00424e6daebc54		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CB38 5356 bytes
font_01_sfnt_off0002dd6d.bin
c05608296f7309c24f22a1fab11861376ca9311aeabba7b34e77027217cd53d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2DD6D 12688 bytes

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