Malicious PDF — malware analysis report

Static analysis result for SHA-256 056e92f9f86c6795…

MALICIOUS

PDF

68.9 KB Created: 2021-09-17 16:45:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: b127f372ae88df604deb34fde89bd899 SHA-1: 3c08eab174d95ed3b6d429523984e1b90cfdba6c SHA-256: 056e92f9f86c6795638c38bf2c7a5e7b3aa6d6f63f28e40e8ba727c24ff2649f
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document contains numerous links, many pointing to disposable domains, suggesting it functions as a link farm designed to redirect users to malicious content. The presence of a feedproxy link disguised as a download for 'uptown funk mp3 song download' further supports a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7113

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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://ardiinerkh.mn/uploads/userfiles/files/42289585482.pdf In PDF document text
    • http://net-work.cz/data/file/jodebepasotifopil.pdfIn PDF document text
    • http://titusauto.hu/kepek/file/74578248504.pdfIn PDF document text
    • http://eakqshop.com/ckfinder/images_store/files/34053831960.pdfIn PDF document text
    • http://bannhuaduong.net/upload/files/87919661879.pdfIn PDF document text
    • https://solidpractise.com/files/userfiles/file/domevewobifadokumizatobud.pdfIn PDF document text
    • http://parkety-patemal.sk/files/file/bagilaxinegukojanifudabin.pdfIn PDF document text
    • http://prttour.ca/FileData/ckfinder/files/20210906_15987E6512C64A13.pdfIn PDF document text
    • http://www.taylormadetc.com/siteadmin/ckfinder/userfiles/files/rubororamomirofajemedu.pdfIn PDF document text
    • http://kamnitikamini.si/upload/files/dumebijudatijesisofiromeb.pdfIn PDF document text
    • https://99shayari.in/userfiles/files/jejufipube.pdfIn PDF document text
    • http://newworldss.com/uploads/file/73189609513.pdfIn PDF document text
    • http://irinka.org/ckfinder/userfiles/files/zurovividexatu.pdfIn PDF document text
    • http://ags-sib.ru/ckfinder/userfiles/files/47321847307.pdfIn PDF document text
    • http://www.caribbeandentist.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613eb50c76e15---97839037954.pdfIn PDF document text
    • http://veszpremkosar.hu/_user/file/ramivezu.pdfIn PDF document text
    • https://www.hit-education.com/wp-content/plugins/super-forms/uploads/php/files/50tflargdip7d11nh7ue3rludd/xetulirabewas.pdfIn PDF document text
    • https://yoimart.com/upload/file/20210911043334.pdfIn PDF document text
    • https://xedulichhaiphong.vn/images/news/files/31503799950.pdfIn PDF document text
    • http://mathcountsoutreach.org/userfiles/file/nowexu.pdfIn PDF document text
    • https://jck.ro/userfiles/file/tikawisafepap.pdfIn PDF document text
    • http://ibb-online.ru/f/file/lijonanonozegigajukitiwif.pdfIn PDF document text
    • https://soswzgierz.pl/web/uploads/files/6286615935.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=uptown+funk+mp3+song+downloadPDF link annotation
    • 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_off0000b646.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB646 15808 bytes
SHA-256: 95bd1abd5425938d1c5fc44a05378022a76f831f0ea24ee2b1bd611ae329c99b
font_01_sfnt_off0000ded2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDED2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f6e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6E9 10976 bytes
SHA-256: e73031cec042e6cfa6920272a7fa6850c00fe15dec3410f1ec950cfdc8f11ea4

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