Malicious PDF — malware analysis report

Static analysis result for SHA-256 120c9df45edc12fb…

MALICIOUS

PDF

41.4 KB Created: 2021-07-09 12:55:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: c0d2edcf925da26c9567ae7e3a4c89fa SHA-1: d6e3bdc5d8d128ace9a7f0c426529e3f45064c91 SHA-256: 120c9df45edc12fbd04f0da83f9263bc818eac0c8cf19bd2b8fd8b617a06f253
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as a malicious screenshot lure, designed to trick users into clicking embedded links. The document contains numerous links pointing to compromised WordPress upload directories and disposable hosting, suggesting an attempt to distribute further malicious content or conduct phishing. The ML classifier strongly supports the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7020

Heuristics 5

  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 41 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://medvor.ru/uplcv?utm_term=can+you+refreeze+thawed+hot+dogs PDF link annotation
    • https://www.sanier.pl/wp-content/plugins/super-forms/uploads/php/files/cai34rqc2anit7k7tj1e9i7tqp/buxeb.pdfIn PDF document text
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/01fssjpteif7j61aoiio69si60/94461684854.pdfIn PDF document text
    • http://xn--80aantfcaehjbxzf1m.xn--p1ai/userfiles/file/19913325729.pdfIn PDF document text
    • http://posekatzahradu.cz/files/file/31147269742.pdfIn PDF document text
    • http://www.empresasdelimpeza.info/wp-content/plugins/formcraft/file-upload/server/content/files/160830922230d2---53822933580.pdfIn PDF document text
    • http://automotiveenergy.cz/userfiles/file/gegorabaxilosotipoziwe.pdfIn PDF document text
    • http://wildpflanzen-planung.de/file/10749067283.pdfIn PDF document text
    • http://teamwork-poetschke.com/ckfinder/userfiles/files/xelinupojuzaro.pdfIn PDF document text
    • http://penoplex24.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160b861675cd7e---31294871113.pdfIn PDF document text
    • http://www.infranetltd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cf471163d08---gujewopajaxefud.pdfIn PDF document text
    • https://www.alongsideasia.com/wp-content/plugins/super-forms/uploads/php/files/ab70bf0f70ff01cc274d89b74a32f01f/30016231284.pdfIn PDF document text
    • http://apcmagon.com/userfiles/rojerokis.pdfIn PDF document text
    • https://ancoraeducacion.com/images/xojosilojezatusidap.pdfIn PDF document text
    • https://nezrenpin.com/calisma2/files/uploads/52753741395.pdfIn PDF document text
    • http://bonfiremadigan.com/uploads/fckeditor/file/rasizatixofaw.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160e1f76518364---72173078629.pdfIn PDF document text
    • https://lostsoulsmemorialnj.org/wp-content/plugins/super-forms/uploads/php/files/54910523a1b377b2ecc933c5087cdce3/fumafinarewixu.pdfIn PDF document text
    • http://abpaluso.com/upload/file/3894041639.pdfIn PDF document text
    • http://falegnameriacastiglione.it/userfiles/files/59705544720.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/16083647212996---jabawekabenobokidud.pdfIn PDF document text
    • https://www.ideaklinikkadikoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c11c7dacbcf---64719295241.pdfIn PDF document text
    • https://www.stamfordtaxis.com/wp-content/plugins/super-forms/uploads/php/files/5p4n8pvlut817htvtk430rdfki/mebat.pdfIn PDF document text
    • https://englewoodgrassfarm.com/wp-content/plugins/super-forms/uploads/php/files/45e2830553ce2e59df5c7a0830381845/88997923549.pdfIn PDF document text

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