Malicious PDF — malware analysis report

Static analysis result for SHA-256 da63dda8d5bb774a…

MALICIOUS

PDF

69.6 KB Created: 2021-07-26 06:48:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 5d4fc4077861dbebac9ecc953add4e8c SHA-1: 365f86690b9d210a00a8677b3b3d2db96baea8c1 SHA-256: da63dda8d5bb774af277d61d3934cf2dda5db76f300e92493b08504432b72679
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by ML classifiers and ClamAV as malicious. It functions as a link farm, containing numerous URLs that point to external resources. Several of these URLs are hosted on compromised WordPress sites, indicating a potential distribution or hosting mechanism for malicious content. The presence of multiple external links and the compromised hosting suggest an attempt to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://come2menorca.com/images/file/90225245897.pdf
    • https://betenagro.com/sites/default/files/file/bevomabisulovenixilagaxi.pdf
    • http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/16070f3625b968---pugulufi.pdf
    • http://www.fotografoeventimilano.com/wp-content/plugins/formcraft/file-upload/server/content/files/160df7d2b2407b---gejedekolixejapowip.pdf
    • https://martybermanassociates.com/wp-content/plugins/super-forms/uploads/php/files/f9da883f1d2cc0af1f8684b7e1065047/repokerar.pdf
    • https://unitedcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085616f90abb---sepotetinekoponalita.pdf
    • http://villabrown.it/userfiles/files/8220125011.pdf
    • http://pnmanagementsolutions.in/uploads/16569319425.pdf
    • http://air-con.ru/upload/files/xidure.pdf
    • http://regimhotelierbucuresti.com/images/userfiles/wabamoladerojibew.pdf
    • http://happyhanool.com/ckupload/files/60120175396.pdf
    • http://carszana.com/image/upload/File/12562406252.pdf
    • https://egokituz.org/files/galeria/files/41578606452.pdf
    • https://www.wikiwebagency.it/wp-content/plugins/super-forms/uploads/php/files/c58212378624d8aea22cfe25e0b64b86/18835087298.pdf
    • https://djhelaly.com/wp-content/plugins/super-forms/uploads/php/files/233fe47b5e1e06bb7d2996c0639dcc4c/12063921490.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=first+and+second+conditional+worksheet+with+answers
    • 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://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_off0000b2ee.bin
07c9ee471ca2aa56b290654096c422b6edef86f7da31c32f2315bd0fd32468ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB2EE 14900 bytes
font_01_sfnt_off0000d8ae.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD8AE 16792 bytes
font_02_sfnt_off0000f0c5.bin
afdef67611e0dc7afea95217987fde0fe3ca4357af8689650a30ce4b6726389a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF0C5 10620 bytes

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