Malicious PDF — malware analysis report

Static analysis result for SHA-256 1298883128f1ddeb…

MALICIOUS

PDF

85.9 KB Created: 2021-09-07 07:53:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 6091361112237e5662fbad9c2da728d3 SHA-1: 68797330ef46c1b476c9210cd215088b722091f9 SHA-256: 1298883128f1ddeb22429e36cc9ad7c374d72ea03ec3fbfa08e9beff6ae0bdff
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to compromised websites, indicating it functions as a link farm. Heuristics suggest these links are used for SEO manipulation and potentially to distribute phishing content or malware. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5019

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 https://smidgel.ru/uplcv?utm_term=transtorno+de+personalidade+multipla+pdf PDF link annotation
    • https://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/rpleo6fpto92ghimm33d3qieug/nawawajalapobixija.pdfIn PDF document text
    • https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16136d75e0eb95---fomonopukigarokazemejur.pdfIn PDF document text
    • https://atlasautoglass.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d6a67f3777---71603088671.pdfIn PDF document text
    • http://qianxi.cn/filespath/files/20210818170754.pdfIn PDF document text
    • http://mensagemcrista.com.br/ckfinder/userfiles/files/91027554086.pdfIn PDF document text
    • https://mosconi.net/userfiles/file/senaxovubujozik.pdfIn PDF document text
    • https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16087443f6916b---13457918870.pdfIn PDF document text
    • https://hglobaltourb2c.com/FileData/ckfinder/files/20210610_6CA4FB55FBB1B24D.pdfIn PDF document text
    • https://abofahed.com/userfiles/file/31743659345.pdfIn PDF document text
    • http://gesht.ru/admin/ckfinder/userfiles/files/91738524598.pdfIn PDF document text
    • http://birons.net/wp-content/plugins/super-forms/uploads/php/files/95f89f61c5e63ea0b664c0886b71c3cb/45666145632.pdfIn PDF document text
    • http://www.photonics-science.com/ckfinder/userfiles/files/zojokovepojamo.pdfIn PDF document text
    • http://acpiindia.com/userfiles/file/niwojukaxodubiworenepez.pdfIn PDF document text
    • http://yuseigachi.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160fcf6a39dcdf---resox.pdfIn PDF document text
    • http://futureinfashion.com/ckfinder/userfiles/files/watij.pdfIn PDF document text
    • https://5a.ro/ckfinder/userfiles/files/31486009375.pdfIn PDF document text
    • http://www.meglobalinc.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160b532e27569e---22304517824.pdfIn PDF document text
    • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e7842b09eda---sadarelirudedefigijutijiz.pdfIn PDF document text
    • https://www.charityweiss.de/wp-content/plugins/formcraft/file-upload/server/content/files/16079eb066ef22---14067357277.pdfIn PDF document text
    • http://nhatminhtrading.vn/app/webroot/uploads/files/5029873698.pdfIn PDF document text
    • http://www.meglobalinc.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16089841f49ec6---82031093625.pdfIn PDF document text
    • https://burkina-businessschool.com/business_school/uploads/file/94404361482.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_off00010718.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10718 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011f2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F2A 20348 bytes
SHA-256: c67051904908baa2fab2acbb2c13a455e891818f9ba59e9a4b14a8372cfda665

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