Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a0e839a45e149e0…

MALICIOUS

PDF

68.1 KB Created: 2021-02-26 20:34:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 6f5bc8f5cad6b7d9ef4843d6cd4db999 SHA-1: 18d34b26e46d7fd6318fed03ab1de155b0a018a8 SHA-256: 5a0e839a45e149e0fdb8fc013ab89db52ef738d56b2b2d132a424cc7ed0a67da
124 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. It contains multiple embedded URLs, many of which point to disposable hosting and are likely part of a link farm designed to redirect users. The document body, though heavily obfuscated, suggests a lure related to design resources, which is a common tactic for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9711

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 https://mezovuduw.ru/award?keyword=typography+design+free+download+psd PDF link annotation
    • https://fijomenameti.weebly.com/uploads/1/3/0/8/130874411/vamaro.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463825/normal_5fd64b156dd35.pdfIn PDF document text
    • http://ludirobus.getenjoyment.net/sigiloxedarenukavewir.pdfIn PDF document text
    • http://nibewubixela.getenjoyment.net/tugumoparavovukemexozaw.pdfIn PDF document text
    • http://mitutepoka.medianewsonline.com/bevimonevufenojunobisuze.pdfIn PDF document text
    • http://fisujerekuvij.getenjoyment.net/bissell_pet_pro_crosswave_2306.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470532/normal_60046d6b00572.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426571/normal_5fc9f1e02b796.pdfIn PDF document text
    • https://doxifivot.weebly.com/uploads/1/3/4/2/134235468/ec7446c7c89309.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/toliwudalamem/wavelet_transform_book.pdfIn PDF document text
    • https://s3.amazonaws.com/fajonubinomeder/19924976969.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/venumojasulubikuguxadasi.pdfIn PDF document text
    • https://s3.amazonaws.com/xedewofuretujo/bomberman_online_multiplayer.pdfIn PDF document text
    • https://s3.amazonaws.com/nokiva/17867541412.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dcdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCDF 5444 bytes
SHA-256: 89ef0229d5849866ca0d908eca15c63d8289e0eb4d5bb67f74a254e066a3dc8d
font_01_sfnt_off0000ef79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF79 10288 bytes
SHA-256: ab3473a12461ea9140493c2f4c0777ed8ae8fca9ded9a36ef08596cd3ccd7ec3