Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd7a2d80591a0d63…

MALICIOUS

PDF

73.9 KB Created: 2021-09-17 13:51:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 1447bb97cc0e652aef2264a8683ea8db SHA-1: e0aef5e8e9c8f8f67c67ea90c1aca1ed2bdc5e5a SHA-256: fd7a2d80591a0d63e3e3da0be6de43a18f21dca3906246682fabd87846198e85
156 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to compromised WordPress upload directories and disposable hosting, indicating a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ed4e51db8c---fomolafajaxupage.pdf In PDF document text
    • http://www.luna1956.com/images/library/File/nikal.pdfIn PDF document text
    • http://ibrahimalsada.com/pics/file/33609591067.pdfIn PDF document text
    • http://www.finanzanlagen-honorarberatung.de/wp-content/plugins/formcraft/file-upload/server/content/files/16140cb7c150a6---gulaguwugililokeponiri.pdfIn PDF document text
    • http://phdpecs.hu/userfiles/files/82585748989.pdfIn PDF document text
    • https://skyfireconsulting.com/wp-content/plugins/super-forms/uploads/php/files/j9muj2j07jh8prd14blued15hc/sesaparawokobowal.pdfIn PDF document text
    • http://sino-web.net/filespath/files/20210904112651.pdfIn PDF document text
    • https://appvid.eus/userfiles/files/zipevanixikerenadepunaso.pdfIn PDF document text
    • http://jamesandsons.ca/userfiles/file/51123886629.pdfIn PDF document text
    • http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/161373fad86fa0---gikofuvewalaf.pdfIn PDF document text
    • http://ballarioarchitetti.eu/userfiles/files/gurepezurumewogarimexu.pdfIn PDF document text
    • http://dirpub.org/editor/ckfinder/userfiles/files/sawoluxapalavifu.pdfIn PDF document text
    • https://ceilford.org/wp-content/plugins/super-forms/uploads/php/files/0954db78f9824b966e2e2eb779f104a1/74499346334.pdfIn PDF document text
    • http://eclickapps.in/userfiles/files/pumarufazalelamib.pdfIn PDF document text
    • https://beauty-full.ru/uploads/files/mapixuvezegavitonefajap.pdfIn PDF document text
    • https://fivetc.vn/uploads/files/67300853216.pdfIn PDF document text
    • http://architettipassarinmarzotto.com/userfiles/files/disibaluwukogamozuli.pdfIn PDF document text
    • http://omni-links.com/images/blog/file/megudaranewe.pdfIn PDF document text
    • http://www.magicapro.it/wp-content/plugins/formcraft/file-upload/server/content/files/161320eb7b62ae---kikisusomifirukegilemi.pdfIn PDF document text
    • http://bscartridge.com/pic/nilanololomenavixa.pdfIn PDF document text
    • http://0-50.ru/userfiles/file/22501915459.pdfIn PDF document text
    • http://hyswimpool.com/userfiles/pikoxilitamufemu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=best+site+to+watch+bollywood+movies+online+freePDF link annotation
    • http://alessandrotria.altervista.org/areap/ckfinder/userfiles/files/390911147.pdfIn PDF document text
    • 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000be1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE1A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d631.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD631 11200 bytes
SHA-256: 1c1fcd06efb79c70140a26626a98e57602d3dbe599929a79350508e654fff8b9
font_02_sfnt_off0000f053.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF053 16084 bytes
SHA-256: 6ffa1ff9def4d2cbf3f3c2ff22345aa5a052b9938b6eb1d3fd9eb21d7760e1e0

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