Malicious PDF — malware analysis report

Static analysis result for SHA-256 e972a55e1b29a514…

MALICIOUS

PDF

65.1 KB Created: 2021-09-06 12:33:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 528dd9cf8b93f2fba5741725a680b548 SHA-1: 7b34b22b5a160e4dd2aac62513cc22a667eeafc4 SHA-256: e972a55e1b29a514c8f4b67867c8c106b6d98a840ab2eee455baa52cfa9ad493
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a link farm that directs users to multiple websites, including one hosted on a compromised WordPress upload directory. The ML classifier and ClamAV detection indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to lure users to external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5541

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
  • 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 http://traditionsradio.com/wp-content/plugins/super-forms/uploads/php/files/fj1peo2qmu1fopn9hclqi21cg7/dewawebijawowodogojib.pdf In PDF document text
    • https://cyklo-wellness-penzion-palice.cz/content/xobunediluvavoxuzu.pdfIn PDF document text
    • https://fedico.ca/upload/editor/file/96038925831.pdfIn PDF document text
    • https://inchirieriavioane.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1606cdead68054---81541742914.pdfIn PDF document text
    • http://pointwebhost.com/calisma2/files/uploads/99087942577.pdfIn PDF document text
    • http://josephpowellfamilyreunion.com/clients/0/04/04c15d356d3082020e114f8c0300f46e/File/77407824250.pdfIn PDF document text
    • http://morecoredesign.com/images/imageUps/files/borif.pdfIn PDF document text
    • https://auto-rujo.com/images-editor/file/57001845023.pdfIn PDF document text
    • http://montgomery71.com/clients/34132/File/9654373578.pdfIn PDF document text
    • https://hoatuoi360.vn/uploads/files/wagokepumun.pdfIn PDF document text
    • http://luluscafeonline.com/uploads/files/24822879354.pdfIn PDF document text
    • http://wellfoto.cz/pictures/files/firuxofurazobujuxomugubom.pdfIn PDF document text
    • https://arizonalightingsales.com/wp-content/plugins/super-forms/uploads/php/files/dd2c7a46056e1a645c24a49588d5c65a/39886956361.pdfIn PDF document text
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/908vrnirte5btd1s3ikgj5p9j6/28701570353.pdfIn PDF document text
    • http://cinstech-inspect-survey.com/fckeditor_userfiles/file/68742704265.pdfIn PDF document text
    • http://carrollcountylawyers.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/tedafifokuzana.pdfIn PDF document text
    • http://xn--80aafbladvtgxneccoge3bt.xn--p1ai/pict/file/ratomoxutipuxojowemawaf.pdfIn PDF document text
    • http://melvin.cz/data/kefawezosumufuxap.pdfIn PDF document text
    • http://oreoltour.ru/sites/default/files/file/tigogeg.pdfIn PDF document text
    • https://hssipm.com/wp-content/plugins/super-forms/uploads/php/files/5aeb4aaebd9d49e04262b548f30ba565/xeloduperuxifexok.pdfIn PDF document text
    • http://schubert-hh.de/image/file/fegebixikileb.pdfIn PDF document text
    • https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/160e679cfc900b---xodig.pdfIn PDF document text
    • http://taispacedesign.com/upload/files/89168491246.pdfIn PDF document text
    • https://bazab.ru/ckfinder/userfiles/files/vumufojijifopekasufaxu.pdfIn PDF document text
    • http://matstravel.ru/userfiles/file/daredodapif.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=kaedah+kuantitatif+pdfPDF link annotation
    • 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_off0000ba81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA81 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d293.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD293 16232 bytes
SHA-256: 965d48b18cfe8c98c9081d1bca7ffe9eb2e11222d42b83367259992eb6438e95