Malicious PDF — malware analysis report

Static analysis result for SHA-256 679128a0f06acc79…

MALICIOUS

PDF

59.4 KB Created: 2021-05-19 11:47:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f44596be42b9c461b2cfa67932d3d66 SHA-1: 902ccc7289054a55390458ddce117c785fdd5db2 SHA-256: 679128a0f06acc79f97deb47c5a7e3e9b944fa1489beee91d5b98a512487238b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains numerous links, many pointing to compromised WordPress upload directories, suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains text related to downloading a movie, which is a common lure. The ClamAV detection and ML classifier further indicate malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8151

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://crysiq.ru/uplcv?utm_term=saw+2+full+movie+in+hindi+free+download
    • https://alexandrapanayotou.com/web/images/static/file/74066447887.pdf
    • http://mu-rrrc.com/userfiles/file/baroduvalu.pdf
    • http://www.ausafrica.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16082f30742c64---xamigobisujujifu.pdf
    • http://bilagroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c07465a454---pofapami.pdf
    • http://www.franklinwebdesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d3c30930f3---62222682772.pdf
    • http://seabeachthailand.com/UserFiles/file/pibagupexizimovanelo.pdf
    • http://gabortech.comadmin/file/kowelul.pdf
    • https://www.prowallpanama.com/wp-content/plugins/super-forms/uploads/php/files/26be9bbf091204ff41501255524b281a/77785581094.pdf
    • http://clearlakesd.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a22a18ad415---feboxedejusinonev.pdf
    • http://insidethedigitaltrend.biz/userfiles/file/kutiguwiraguzumusemos.pdf
    • https://kicksomeglass.com/wp-content/plugins/super-forms/uploads/php/files/b0db03a64604d1bc8328be9cbc0816c5/83344870984.pdf
    • https://activepymes.com/pub/file/62189056486.pdf
    • https://wilsonbarrera.com/inicio/wp-content/plugins/formcraft/file-upload/server/content/files/1609e177b3cf63---musemokodu.pdf
    • https://daleel.global/wp-content/plugins/super-forms/uploads/php/files/o48cig60id55iudod7g2enacrh/33522790211.pdf
    • https://micast.de/wp-content/plugins/super-forms/uploads/php/files/no51hgndii2t3irb63jo67ic1g/15928366710.pdf
    • http://creativeindustries.ru/uploads/userfiles/file/wowunutije.pdf
    • http://jjmcp.jp/userfiles/Image/file/61829736262.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d313.bin
4da268b3ec877bbcfd1a9227934d3982759524a31719533f3405ece05e9736f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD313 5356 bytes

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