Malicious PDF — malware analysis report

Static analysis result for SHA-256 031fec6a12dc92ad…

MALICIOUS

PDF

62.5 KB Created: 2021-09-23 10:05:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 2bf13ccc8dd97058033de0a84725dd02 SHA-1: e5251eea780adbaa8805e86a9c381bd1288b7c4e SHA-256: 031fec6a12dc92add49bf43ac8d0cddbbff167b52956e8670fd52e7dac49c24e
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, with one heuristic specifically identifying it as a link farm on disposable hosting. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. While no scripts were directly extracted, the PDF structure and embedded links suggest it's part of a larger malicious campaign, potentially using embedded JavaScript for redirection or exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6981

Heuristics 4

  • 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
  • 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://bbmpva.nl/fckassets/file/16840750912.pdf In PDF document text
    • https://devcons.org/uploads/userfiles/files/piretubewerikoto.pdfIn PDF document text
    • http://graciaindoutama.com/kingkong/userfiles/files/36427068213.pdfIn PDF document text
    • http://svazekobciorlice.cz/userfiles/file/fesifimeti.pdfIn PDF document text
    • https://onecre.com/images/content/files/22372835538.pdfIn PDF document text
    • https://shop-ecobati.com/medias/upload/files/peditibezofesokujijokus.pdfIn PDF document text
    • https://e-casainteligenta.ro/userfiles/file/63263661966.pdfIn PDF document text
    • http://cesishotel.com/res/wysiwyg/file/63550585357.pdfIn PDF document text
    • https://martan.es/cenavarra_userfiles/files/86258655794.pdfIn PDF document text
    • https://vmwarts.com/ecovic/file/29757635044.pdfIn PDF document text
    • http://ottuk-e.org/userData/board/file/gabejijivudejimutovekenap.pdfIn PDF document text
    • http://www.nagsa.es/ckfinder/userfiles/files/luzelufipag.pdfIn PDF document text
    • http://yesfabric.com/images/upload/File/kixesux.pdfIn PDF document text
    • https://siam-royal-view.ru/data/files/fegilanosepazosexopa.pdfIn PDF document text
    • https://jaukiaplinka.lt/ckfinder/userfiles/files/soruwadakobiwim.pdfIn PDF document text
    • https://bacninhonline.com/webroot/img/files/gexexopikoregesidafoka.pdfIn PDF document text
    • https://premiersuli.hu/files/files/fejobidarosukuxigu.pdfIn PDF document text
    • http://union.travel/ckfinder/userfiles/files/19215929564.pdfIn PDF document text
    • https://oancora.com/ckfinder/files/46166875101.pdfIn PDF document text
    • http://schouteninterieurwerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161408565b0f95---rovatuxesabedenixudaze.pdfIn PDF document text
    • https://www.tunnel.de/files/uploaded/file/49160566901.pdfIn PDF document text
    • http://cobansut.com/userfiles/file/rapetudatusixepedawovuna.pdfIn PDF document text
    • http://incomingmakedonia.com/files/files/somevidizutito.pdfIn PDF document text
    • http://daydeothe.vn/rich_editor/file/64966538785.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=wifi+hacking+software+2020PDF link annotation
    • http://abcs.umontreal.ca/upload/files/60293840131.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b537.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB537 14632 bytes
SHA-256: b982ab2e6fd946c241bb7b781a29c6417abd9f88ec9e0cb58a09d3e1e7f3925d
font_01_sfnt_off0000da16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA16 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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