Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fc0e58cae0a80f4…

MALICIOUS

PDF

72.6 KB Created: 2021-09-16 03:06:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 74d076f949be1494d890d537dcf3f3fd SHA-1: ffb37348449eef7091e1cd389e996c9abee9d3fe SHA-256: 1fc0e58cae0a80f40289fc703d96df00be1f8d81f6ed5a7f600d7663322c215e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous external links, many pointing to compromised WordPress upload directories and disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and link farm behavior are indicative of an attempt to lead users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8257

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://allytemp.ru/uplcv?utm_term=minecraft+skin+editor+mobile PDF link annotation
    • http://kahsport.cz/userfiles/file/nadug.pdfIn PDF document text
    • http://asirius.su/wp-content/plugins/super-forms/uploads/php/files/725fdcaceed59062205169a470dd753a/35087809791.pdfIn PDF document text
    • https://tanthueviet.vn/img_data/files/35404666784.pdfIn PDF document text
    • http://samocvet.org/foto/ck/files/betipaxuboxitubekijufo.pdfIn PDF document text
    • http://marcth.pl/media/fck/file/38671135146.pdfIn PDF document text
    • http://tienphat.vn/imagesflashupload/file/golorasezu.pdfIn PDF document text
    • http://sportschoolindex.nl/images/uploads/fosavezatodorekuzigare.pdfIn PDF document text
    • http://brodart01.com/wp-content/plugins/super-forms/uploads/php/files/6ngrjaau5mf1q8sq4obg1oovkt/vuriwukewabelefebubumole.pdfIn PDF document text
    • http://twtime.com/uploads/files/202109152046204563.pdfIn PDF document text
    • http://kindervakantieweekdeurne.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161408ab062134---54138425566.pdfIn PDF document text
    • https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612fd216bf43b---46059685231.pdfIn PDF document text
    • http://foto-klub.dk/userfiles/file/64426166615.pdfIn PDF document text
    • http://goodlife88.com/uploads/files/20033562341.pdfIn PDF document text
    • http://masonhn.com/d/files/wilipijofanuganodad.pdfIn PDF document text
    • http://goldartline.ua/userfiles/file/xetobigani.pdfIn PDF document text
    • http://zhatuogz.com/uploadfile/file/bexoruwomos.pdfIn PDF document text
    • http://www.gamylai.vn/uploads/files/7565796894.pdfIn PDF document text
    • https://biserica-izvorul-tamaduirii.ro/files/93846486363.pdfIn PDF document text
    • http://yossy.biz/userfiles/file/60574099193.pdfIn PDF document text
    • https://geniodelweb.com/file/vorerik.pdfIn PDF document text
    • http://blossomtour.net/FileData/ckfinder/files/20210916_12AB69AC720E8D5C.pdfIn PDF document text
    • http://editora-arara-azul.com.br/site/admin/ckfinder/userfiles/files/85113889859.pdfIn PDF document text
    • http://summitremodelinginc.com/userfiles/files/silikexogapujox.pdfIn PDF document text
    • http://www.gobarging.com/uploads/textareas/file/32778944408.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_off0000d37d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD37D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000eb8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB8F 17616 bytes
SHA-256: c84dfccc7cc32929f47714d3c1d07a57148d9c963f5f6c61a86d8e2e05004bc5

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