Malicious PDF — malware analysis report

Static analysis result for SHA-256 71980560703e9515…

MALICIOUS

PDF

73.7 KB Created: 2021-09-13 08:54:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 24f0d5c51bd95b85a250ff0c88e844a6 SHA-1: c34786727226193ba38f0606a0a70176a71a4b97 SHA-256: 71980560703e951523eaab616d084a8b16df4b5f33e492db1ab9088e7192a967
94 Risk Score

Malware Insights

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

The file was detected by ClamAV as Pdf.Phishing.Trojan. The PDF contains a large number of external links, many hosted on disposable domains, indicating a link farm designed to distribute malicious content or phish users. The presence of multiple unknown URLs suggests a broad distribution attempt.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4113

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://tecsun-moscow.ru/docs/file/29435223283.pdf In PDF document text
    • http://ugyvednok.hu/userfiles/file/40576908213.pdfIn PDF document text
    • http://ktcyy.com/ckfinder/userfiles/files/wowewovaterum.pdfIn PDF document text
    • http://okzawidow.pl/img/upload/files/43400290048.pdfIn PDF document text
    • http://jongauger.com/ckfinder/userfiles/files/78391467561.pdfIn PDF document text
    • http://way-of-spirit.ru/upload/file/27240163765.pdfIn PDF document text
    • http://laclonghotel.vn/upload/files/jeribepunotuwu.pdfIn PDF document text
    • http://unternehmensberatung-hegenbarth.com/userfiles/file/guribasatifejetuj.pdfIn PDF document text
    • https://xuantruongtech.com/images/ckeditor/files/16703561576.pdfIn PDF document text
    • https://ratoempat.com/contents/files/63957389427.pdfIn PDF document text
    • http://retrolondontees.com/userfiles/file/4693632102.pdfIn PDF document text
    • http://caratow.nl/userfiles/file/4192192197.pdfIn PDF document text
    • http://quanhoangtsi.com/upload/quangtri/files/pezepenabobemofi.pdfIn PDF document text
    • http://lnaixi.com/userfiles/file/20210902031744_1097813116.pdfIn PDF document text
    • https://gcr.goldcrownresort.com/magazine_files/files/rawabuwixifipu.pdfIn PDF document text
    • https://rhdplumbing.com/wp-content/plugins/super-forms/uploads/php/files/176dee2c75053cb6ad20c68a78d17c54/97509379440.pdfIn PDF document text
    • https://horgaszvelem.hu/ckfinder/userfiles/files/66516479349.pdfIn PDF document text
    • http://www.marcelasemper.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f879cd3c0d---dorutelelemufezuse.pdfIn PDF document text
    • https://www.bevillelecomte.ovh/ckfinder/userfiles/files/11110563088.pdfIn PDF document text
    • https://rafautama.com/uploads/file/49300523205.pdfIn PDF document text
    • http://tonyprins.nl/images/uploads/file/vatesovot.pdfIn PDF document text
    • http://barcelonasixtytwo.com/userfiles/file/63046425263.pdfIn PDF document text
    • https://www.truckersplantparts.co.uk/ckfinder/userfiles/files/34257527107.pdfIn PDF document text
    • http://musicincw.com/fckeditor/userfiles/image/tojunofagevejega.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=what+were+victorian+dresses+made+ofPDF 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_off0000d6b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6B5 17056 bytes
SHA-256: 627b9608c45c4e9e299fc541522ee6fb6a83b8b089943c7f8d2cb582cb3787b0
font_01_sfnt_off00010228.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10228 10840 bytes
SHA-256: ddf2113309b2a95df2bcfdaba93c11897bd41f4772a6aec7c7234aab9c23e920