Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd0f30051193577e…

MALICIOUS

PDF

60.9 KB Created: 2021-10-03 20:34:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: 249f0785d15205dd37c9777dc38ea7cc SHA-1: 82f8db98dd4a021c56a74d7bc32d4ece9d2dd518 SHA-256: dd0f30051193577ebcbf8e4cfc766039e2c2d18ed2d2244436e9741f590c6fd3
94 Risk Score

Malware Insights

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

The critical ClamAV heuristic identified this PDF as a phishing trojan. The PDF contains numerous embedded URLs pointing to disposable domains, a tactic often used to host phishing pages or distribute further malware. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' specifically flags the document as a link farm on disposable hosting, reinforcing the malicious intent.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4569

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://angarakshaksecurity.com/userfiles/file/854725963.pdf In PDF document text
    • https://smsenerji.com/resimler/files/54463645473.pdfIn PDF document text
    • http://ctyrkolky-gamax.cz/data/dokumenty/jomazedobosini.pdfIn PDF document text
    • http://jarosi.hu/files/file/pokotidamamupimunimuxu.pdfIn PDF document text
    • http://luxcottage.ru/stroykamen/userfiles/file/zuwaj.pdfIn PDF document text
    • https://jv-cms.crazy-jessie.nl/uploads/files/16579139418.pdfIn PDF document text
    • https://www.avenueroadadvertising.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613f5f327d80c---jonijis.pdfIn PDF document text
    • http://www.expo-hotel.com/english/wp-content/plugins/formcraft/file-upload/server/content/files/16145b8c23add2---xogorezazaluperefazupivad.pdfIn PDF document text
    • http://erisalaw-chicago.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/20167047758.pdfIn PDF document text
    • http://fsgpj.com/upfolder/e/files/20210917023231.pdfIn PDF document text
    • http://med-os.com/user_upload/file/nupozuza.pdfIn PDF document text
    • http://dakov.hu/_user/file/90627267143.pdfIn PDF document text
    • http://onelove.cz/file/46140096013.pdfIn PDF document text
    • http://olympicburger1988.com/uploads/files/43829784578.pdfIn PDF document text
    • http://springgalleryng.com/Images_upload/files/77590819984.pdfIn PDF document text
    • http://anpharma.net/upload/files/17328860228.pdfIn PDF document text
    • http://bubblesoflove.net/wp-content/plugins/formcraft/file-upload/server/content/files/16153d42d6a605---nepejuv.pdfIn PDF document text
    • http://ketphatthinh.vn/upload/files/49148500770.pdfIn PDF document text
    • http://www.dogwoodagility.nl/ckfinder/userfiles/files/83677141441.pdfIn PDF document text
    • https://munis-roquesalbes.cat/demo/vilalba/imatges/file/18979908793.pdfIn PDF document text
    • http://dulwichtaxi.com/survey/userfiles/files/rolubaremum.pdfIn PDF document text
    • https://northcoteplaza.com/userfiles/file/43334452703.pdfIn PDF document text
    • http://kiavysocina.cz/UserFiles/File/22249149839.pdfIn PDF document text
    • https://nepalfinepashmina.com/userfiles/file/jikapudaregobirokefe.pdfIn PDF document text
    • http://sh-ruiyangcpa.com/userfiles/file/2021-9///2021931819277271.pdfIn PDF document text
    • http://stellamaris.cz/userfiles/karenazemipijoparokavo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=function+of+family+as+a+social+institutionPDF 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_off0000b1a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB1A7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000c9be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9BE 10456 bytes
SHA-256: de0125b18d8f73f094d4d469bf741be483f276578a3a9dd31b29d727465cd22d

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