Malicious PDF — malware analysis report

Static analysis result for SHA-256 37a1fe71b4bb8c0d…

MALICIOUS

PDF

64.0 KB Created: 2021-09-03 04:23:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: b53c74786475dde81c9942e3c50ca652 SHA-1: 38b269eef041b9621f840c31d936e37cca7c7cd3 SHA-256: 37a1fe71b4bb8c0d9614395c848da03ab99a3e6e1045c19816cddf66dd0e7571
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The file contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting a link farm designed to redirect users to malicious content. The ML classifier also indicated a high probability of maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7073

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://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1611b19940a174---pufafigipal.pdf
    • https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1607c50b80e7a1---72533091839.pdf
    • http://asja-doll.ru/userfiles/file/tadanabetiwevivaluzujavox.pdf
    • http://adamslakeband.org/userfiles/file/82708635740.pdf
    • https://hssanesteban.cl/files/wivujefoxusif.pdf
    • http://apexhealthnutrition.com/newerac2c/userfiles/file/72311111046.pdf
    • http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d24f5cc39f---71087724960.pdf
    • https://resulgame.com/calisma2/files/uploads/peboladurokake.pdf
    • http://xn--aknmedikal-yub.com/uploads/file/goxevixukevawumo.pdf
    • http://clintonseniorhighclassof77.com/clients/e/ec/ec6cde7faca09d53f5ba1fe44cd32e38/File/gobefokizosofe.pdf
    • http://smclassof57.org/clients/34860/File/5325480087.pdf
    • https://nowackleverkusen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160735f9e8d301---sasaro.pdf
    • https://people11people.com/uploads/File/77395252775.pdf
    • http://kite-surf.sk/files/lusodolajaka.pdf
    • http://onlineexpert.in/userfiles/file/70576183337.pdf
    • https://erdenetpost.mn/userfiles/files/86130566795.pdf
    • http://stagelight.pl/userfiles/files/30267883963.pdf
    • http://mvdeastudio.it/userfiles/files/zurarexevosinetuwinatefu.pdf
    • http://astmasme.com/userData/board/file/sefewidezonadeg.pdf
    • https://honkakuji.jp/honkakuji/images/ckfinder/files/24971938337.pdf
    • http://kleiberit.ru/files/file/54073725574.pdf
    • https://bikinibody.be/wp-content/plugins/super-forms/uploads/php/files/815207q385pc3n71ls0djc2o2k/88362843522.pdf
    • https://www.helpfulhunks.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1611cbf0f478c4---fibifag.pdf
    • http://www.mbk-montage.nl/ckfinder/userfiles/files/63020102053.pdf
    • https://dichocungtoi.com/userfiles/file/gonuken.pdf
    • https://aliencosmicexpo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fb0085a24c3---58313826113.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=salesforce+sales+cloud+workbook+pdf
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea47.bin
cef323b2dffc8dbdeee6719db2c96fe63ce9da9531fa4a158f9f36f9c2b3d03f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA47 10812 bytes

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