Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dec0c608199eb8d…

MALICIOUS

PDF

62.5 KB Created: 2021-10-01 03:17:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 7d2de91ffe737e834eb844e80bf2c7ad SHA-1: 0267d02b8f45a962e48b74ed6afb73935f5a39c4 SHA-256: 2dec0c608199eb8d6a051371007e03f1b75e49bd04a98cecfc33f6b626404b5c
182 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1190 Exploit Public-Facing Application

This PDF document contains embedded JavaScript and a large number of external links, many pointing to compromised WordPress sites. The heuristics indicate it's an image-based lure designed to trick users into clicking, likely to download a second-stage payload or redirect to a phishing page. The embedded JavaScript is a strong indicator of malicious intent, potentially used to exploit vulnerabilities or initiate further malicious actions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5364

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 62 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://pixomot.ru/uplcv?utm_term=how+to+restore+text+messages+on+android PDF link annotation
    • http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/161362cf254df3---xerawetefuravi.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/sipovepexeduxazorosuril.pdfIn PDF document text
    • http://ivankotov.ru/img/lib/file/luwivalasupufuboru.pdfIn PDF document text
    • http://weifong.tw/fckimages/file/mujinofeferanoli.pdfIn PDF document text
    • https://avukat.kocgrafik.net/upload/files/loludivovup.pdfIn PDF document text
    • https://samoinstitute.mn/uploads/assets/file/84781567688.pdfIn PDF document text
    • https://controlcert.se/wp-content/plugins/formcraft/file-upload/server/content/files/1614edda762ef4---lubaragi.pdfIn PDF document text
    • https://duocvinhkim.com/userfiles/file/66456297645.pdfIn PDF document text
    • https://getlovebooks.com/wp-content/plugins/super-forms/uploads/php/files/20886bc2360cbc037c3711b195a45b8a/43148329727.pdfIn PDF document text
    • https://taflanelektronik.com/img/userfiles/file/kofajuwokuketebomer.pdfIn PDF document text
    • http://ke-sen.com/userfiles/file/1632893727.pdfIn PDF document text
    • https://legend-chang.com/UserFiles/files/83818281151.pdfIn PDF document text
    • http://sskj.pl/userfiles/file/98141226697.pdfIn PDF document text
    • http://nuovartea.eu/userfiles/files/dopasatabuwila.pdfIn PDF document text
    • http://labonguyenhoang.com/img-chamthi/files/76530104529.pdfIn PDF document text
    • http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615576e7e3e4e---fodakogifis.pdfIn PDF document text
    • http://chromavials.com/d/files/27353273361.pdfIn PDF document text
    • http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/16149638761dc5---17696868373.pdfIn PDF document text
    • http://elisa5888.com/shopadmin/upload/files/50229884043.pdfIn PDF document text
    • https://tpk-m.ru/files/file/bubokakiwegopaxo.pdfIn PDF document text
    • http://everbeenmagnet.com/js/upfiles/files/xolevepuraxutapini.pdfIn PDF document text
    • http://teen.plovdivweek.com/js/ckfinder/userfiles/files/fodogudunubegiwi.pdfIn PDF document text
    • https://retrofitoman.com/ckfinder/userfiles/files/32807683120.pdfIn PDF document text
    • http://circolosilverblufitnessclub.eu/userfiles/files/werikunanasopumezedotex.pdfIn PDF document text
    • https://spbmworld.com/anaeter_capital/siteadmin/userfiles/files/58128635100.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_off0000b11b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB11B 10724 bytes
SHA-256: 891fd0463543bd93714e321455c270f7651e75ad99ea5ea4e7a3b9eea3d21d2c
font_01_sfnt_off0000c993.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC993 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1