Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e56b7c5e0701cee…

MALICIOUS

PDF

63.9 KB Created: 2021-06-01 11:23:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 872f44d6edfccaf09a921546e6427cbd SHA-1: 7b67c062b6f92ad341e11964532209dfe7180965 SHA-256: 0e56b7c5e0701cee5981844298d2d43690e6b31513fd28f124a7957c8f0cc5a2
154 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified as a link farm, and is flagged by ClamAV as Pdf.Phishing.Trojan. The document body, though corrupted, suggests a lure related to 'consumer math chapter 8 test answers'. The presence of embedded URLs and the link farm heuristic indicate a strong likelihood of redirecting users to malicious or spam content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9563

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://pixomot.ru/pbw?utm_term=consumer+math+chapter+8+test+answers
    • https://static.s123-cdn-static.com/uploads/4463308/normal_5fefbc96a5e36.pdf
    • https://static.s123-cdn-static.com/uploads/4446784/normal_5fcacd27df696.pdf
    • https://kajaseje.weebly.com/uploads/1/3/7/5/137507408/xarera.pdf
    • https://static.s123-cdn-static.com/uploads/4366982/normal_5febbe6c23787.pdf
    • https://tofibuji.weebly.com/uploads/1/3/5/3/135309424/b76619.pdf
    • https://dipilewojariwu.weebly.com/uploads/1/3/2/8/132814651/9842cf5.pdf
    • https://juzolafer.weebly.com/uploads/1/3/4/3/134382033/3a4bb1.pdf
    • https://nenatuver.weebly.com/uploads/1/3/4/0/134017756/tebenu-fukireve-xijosupofikana-fogaveviwev.pdf
    • https://cdn-cms.f-static.net/uploads/4486521/normal_603eac3691f7e.pdf
    • https://cdn-cms.f-static.net/uploads/4426944/normal_6027c7d44d100.pdf
    • https://static.s123-cdn-static.com/uploads/4366659/normal_60050650204ec.pdf
    • https://static.s123-cdn-static.com/uploads/4407331/normal_5ff47d7b271f9.pdf
    • https://cdn-cms.f-static.net/uploads/4410674/normal_601a80718e904.pdf
    • https://fisupipegapug.weebly.com/uploads/1/3/4/5/134515512/betebu-jilosoxusix-nojetemaketob.pdf
    • https://static.s123-cdn-static.com/uploads/4498992/normal_5fca0fd79d4b8.pdf
    • https://gubetixe.weebly.com/uploads/1/3/4/3/134314982/5619523.pdf
    • https://sarenudubafuje.weebly.com/uploads/1/3/4/6/134680246/8240536.pdf
    • https://cdn-cms.f-static.net/uploads/4491669/normal_5fd7cd9c04a2b.pdf
    • https://static.s123-cdn-static.com/uploads/4467278/normal_5fe1653d4c2fe.pdf
    • https://guvatezip.weebly.com/uploads/1/3/0/7/130776756/jasirezeramelim-gutakagixep.pdf
    • https://cdn-cms.f-static.net/uploads/4450889/normal_606e6dcbbbde7.pdf
    • https://cdn-cms.f-static.net/uploads/4444643/normal_60107fbf30ce5.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://negovijalulu.pbworks.com/w/file/fetch/144418476/what_does_ch_mean_on_lg_air_conditioner.pdf
    • http://wuvebag.pbworks.com/w/file/fetch/144428778/solving_systems_of_equations_by_graphing_worksheet_answer_key_kuta_software.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eee0.bin
003004f457bb27708f6846e79e814f319d381edac6e1ddf4cb9143a04f002ac0
pdf-font-stream PDF embedded font (sfnt) at offset 0xEEE0 5284 bytes