Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa0a5ce9f1f0ae95…

MALICIOUS

PDF

87.4 KB Created: 2021-07-18 07:27:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 60b0e1595f0811ec11a9686490730b6c SHA-1: 550ba054241dfda3d0ca8e3b6f20212e3d34291d SHA-256: fa0a5ce9f1f0ae9594d27208ee61fbdd6da489770c9d3d58f96299238494c24d
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file is identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, directing users to compromised WordPress upload storage and other disposable hosting sites, disguised as a free PDF download for religious texts. The embedded URLs and the heuristic firings strongly suggest a phishing attempt to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

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.rlktechniek.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607593f63219a---2693744711.pdf In PDF document text
    • http://cz-synergy.cz/data/file/xolomiw.pdfIn PDF document text
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/eed9cbfb7fb736a4ea7a19ca9a638416/rurijonumek.pdfIn PDF document text
    • https://thefertilizerequipment.com/d/files/59084003326.pdfIn PDF document text
    • http://ophtalmic-overnight.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160afd0ca0ee2b---48948712125.pdfIn PDF document text
    • https://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/7b9984d38e6fdc2ab6a606d41d0fe858/76949080264.pdfIn PDF document text
    • http://bularz-auto.pl/images/userfiles/file/zoragoranetawak.pdfIn PDF document text
    • https://gpagroup.in/wp-content/plugins/formcraft/file-upload/server/content/files/16073965184cb5---libobituluworegarujekoxog.pdfIn PDF document text
    • http://cargo3030.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607797db16cfd---93962013444.pdfIn PDF document text
    • http://totaleclipsenv.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c61f99ec697---mefuwuzaje.pdfIn PDF document text
    • https://moma-restaurant.com/wp-content/plugins/formcraft/file-upload/server/content/files/160805f4e7e33e---daxanas.pdfIn PDF document text
    • https://dmvassociates.com/wp-content/plugins/super-forms/uploads/php/files/69938c0808cbda1d5a337ab7289db94c/71025286255.pdfIn PDF document text
    • http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16094b4a1e0e3b---fowuwif.pdfIn PDF document text
    • https://livingcircles.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160a2d12e04a1a---7902784926.pdfIn PDF document text
    • http://josephpowellfamilyreunion.com/clients/0/04/04c15d356d3082020e114f8c0300f46e/File/62813094564.pdfIn PDF document text
    • http://vudafrique.com/wp-content/plugins/super-forms/uploads/php/files/13fc5797f61a54c873400522fdcf8b84/vujefe.pdfIn PDF document text
    • https://al-farh-iq.com/upload/userfiles/file/78632025354.pdfIn PDF document text
    • https://marblobathware.com/app/webroot/img/files/25966453332.pdfIn PDF document text
    • https://luathoanghuy.com/uploads/files/ferifaxup.pdfIn PDF document text
    • http://globaltruthmediagroup.com/clients/a/aa/aa8380eac451876ae6ab993bf3a720d6/File/patifafakaje.pdfIn PDF document text
    • https://bentzendesign.se/wp-content/plugins/formcraft/file-upload/server/content/files/1608d9d645f407---44592216650.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=bible+old+and+new+testament+pdf+free+downloadPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f229.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF229 17228 bytes
SHA-256: 7e2af17a96f144922ceaad4e85266a5dbd6a7dd71275059515e7256ed557b43d
font_01_sfnt_off00011f0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F0B 10940 bytes
SHA-256: 764c28c501c1facf62fb2e5d7fad76e1021b57a35bc729820701be18486b63be
font_02_sfnt_off0001382a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1382A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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