Malicious PDF — malware analysis report

Static analysis result for SHA-256 f08747cc4a9747d5…

MALICIOUS

PDF

66.5 KB Created: 2021-09-01 14:52:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 0f498d7fedcaa20869ed7d8eb359c776 SHA-1: edd52d834aecdc436fa776007e0736293f73580f SHA-256: f08747cc4a9747d57411723812063fb4e46c4657081e28d84d1b11617b6502d4
94 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised CMS upload directories or disposable hosting, indicating a link farm designed to redirect users to malicious content. The ML classifier also flagged this PDF as malicious. The primary attack pattern involves luring users to external sites, likely for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8076

Heuristics 4

  • 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
  • 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://philabc.ru/uplcv?utm_term=sex+after+narcissistic+abuse PDF link annotation
    • http://impex-italia.it/userfiles/files/bigimeni.pdfIn PDF document text
    • http://sts-logistika.ru/wp-content/plugins/super-forms/uploads/php/files/08c3114bac3107e7722bfe16a7694643/besad.pdfIn PDF document text
    • http://jtour.vn/userfiles/file/jusetevagevijexekega.pdfIn PDF document text
    • https://markapin.com/calisma2/files/uploads/varukifapomerusitopa.pdfIn PDF document text
    • http://www.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c661a4c2f33---81098723047.pdfIn PDF document text
    • http://daoltrading.com/userData/board/file/11116859514.pdfIn PDF document text
    • http://gsmontaggi.it/userfiles/files/zufaxodid.pdfIn PDF document text
    • http://es-manzokudou.com/yamituki-n/uploads/files/85346317988.pdfIn PDF document text
    • http://aweibel.com/Photo/file/75332342177.pdfIn PDF document text
    • http://superfishinglewood.com/uploads/files/pifenurovirakeduwujapize.pdfIn PDF document text
    • https://karapinarinsaat.net/userfiles/upload/file/nifagerulip.pdfIn PDF document text
    • http://ersatzmonitor.de/userfiles/file/29452862552.pdfIn PDF document text
    • http://daehwa.info/uploaded/file/48745403446.pdfIn PDF document text
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/cafa122f1e930bcd6707a241919e56a9/80551507148.pdfIn PDF document text
    • http://ksnjl.com/userfiles/files/68800607296.pdfIn PDF document text
    • https://jamisonfurnace.ca/userfiles/files/xixuzeb.pdfIn PDF document text
    • http://www.risingstars.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160d304765c757---sabefax.pdfIn PDF document text
    • http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609667fde9fcf---vevafuvoxebirate.pdfIn PDF document text
    • https://dewalt-naradi.cz/media/upload/editor/file/pesedejapegixutegirizoxa.pdfIn PDF document text
    • http://www.icodar.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fb78c45a14---96671586203.pdfIn PDF document text
    • http://www.redactordecontenidos.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16072dfb4d53cb---39023549102.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA21 10580 bytes
SHA-256: 56721ffc83157d1baa0670d6b5399a082599c1e96e280a7cf450bcded994b5a6

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