Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d48b06edeaf4975…

MALICIOUS

PDF

88.7 KB Created: 2021-06-27 02:36:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 4963396ebe90aa0b0f3a20df153dd4b8 SHA-1: 8ab2f61caba2d832268ff7a8395395b06d6281f9 SHA-256: 6d48b06edeaf497520eac5c8708e5166800f149bdce05b63537263f399685e61
156 Risk Score

Malware Insights

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

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links to external websites, many hosted on compromised WordPress sites or disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the overall structure indicate an attempt to exploit users through deceptive links, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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 https://archism.ru/uplcv?utm_term=how+old+is+the+oldest+rock
    • https://mannerfeltdesignteam.se/ckfinder/userfiles/files/11320968215.pdf
    • https://gdr.co.il/wp-content/plugins/super-forms/uploads/php/files/89768b74356e3f36244cef6ada285626/nezodelapavupozosu.pdf
    • https://catherinehourihan.art/wp-content/plugins/super-forms/uploads/php/files/57029f86782990ed3248485884f339d0/nokokokorut.pdf
    • https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/aab3ca3a4f043b959f0989a1c73e4465/67999349216.pdf
    • https://erinmillssmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/bvl7q0u05hnnh15hdu1nv3th72/puboto.pdf
    • http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160c4937915307---62214356595.pdf
    • http://topopentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc4dd68cc2---22186889126.pdf
    • http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d0b278e5249---fisapumilajidapogeg.pdf
    • https://binarbaidtrading.com/public_html/userfiles/file/nugadogaluzutinowinomu.pdf
    • http://www.peplex.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607ba16dcb160---38289883342.pdf
    • http://www.caribbeandentist.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f37a378614---42470512512.pdf
    • http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609675df7f816---84788428558.pdf
    • http://altiro.nl/home/tjerk/file/xejofasajuwivuwadodobuma.pdf
    • https://getlovebooks.com/wp-content/plugins/super-forms/uploads/php/files/38d1d423d85d102ecf9ee1d1c9493091/7011213975.pdf
    • https://www.dishdivvy.com/wp-content/plugins/super-forms/uploads/php/files/17351752769b9a3c1ff82bfbc3a9a765/favorab.pdf
    • https://www.karavanlakesfet.com/wp-content/plugins/super-forms/uploads/php/files/c0ae8b00ddb05b71e2f6a0a5aa4761ed/54733539374.pdf
    • https://vickers-electronics.co.uk/wp-content/plugins/super-forms/uploads/php/files/261afad135b21c9e1a35c86206f46c60/4836191593.pdf
    • http://hrt-foto.hu/_user/file/xezijonelexaluwogalilawi.pdf
    • https://www.charityweiss.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b0d88d4ec85---sofatis.pdf
    • http://txextremecarts.com/userfiles/file/vulojapaba.pdf
    • https://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/1607a301735f9f---fiziduvax.pdf
    • http://www.alwaysflorida.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073edea7743b---82285774926.pdf
    • https://airflow-skateboards.com/upload/file/mezelosozelaw.pdf
    • 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_off0000fc71.bin
dd7966200ef218f021740b0ecefd3a8769a378ecd343040b64b420dbd8a49cda		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFC71 10368 bytes
font_01_sfnt_off00011406.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11406 16792 bytes
font_02_sfnt_off00012c18.bin
039f0eae72aba110bc1d9340204af92035dadbcec75834f0a39245ddf140f8be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12C18 16536 bytes

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