Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e68b875d3df238e…

MALICIOUS

PDF

69.6 KB Created: 2021-02-15 02:17:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 380a84fd23a6c426c857ec58d065354f SHA-1: 74ca94d20fb13744a027b88a487e460dcefd61d8 SHA-256: 1e68b875d3df238e3b1e7786b8f22ef19d28fe7e286e9644b5655bbc92d65f97
184 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, identified as a link farm. The ClamAV detection and ML classifier indicate malicious intent, specifically classified as Pdf.Phishing.Trojan. The presence of multiple external URLs suggests the document is designed to redirect users to potentially malicious sites, possibly for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8239

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
  • 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.
  • 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://seumenha.ru/aws?utm_term=belated+happy+birthday+images PDF link annotation
    • https://togajakuro.weebly.com/uploads/1/3/1/4/131409127/getozigotub.pdfIn PDF document text
    • https://walikuroxora.weebly.com/uploads/1/3/2/8/132815001/ritelesomamiroze.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444115/normal_5fe4df864bc32.pdfIn PDF document text
    • https://witojezig.weebly.com/uploads/1/3/0/7/130776148/1134362.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386824/normal_5fe42cebdb9bd.pdfIn PDF document text
    • http://rukawagamijo.iblogger.org/lukaziserawomalaxasixajaf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481273/normal_5fe654382964d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426696/normal_5fe824dc762f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470521/normal_5fe8eafa17cd1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481830/normal_600e8b8652527.pdfIn PDF document text
    • http://tirudibemaj.22web.org/o_mio_babbino_caro_sheet_music_imslp.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4428331/normal_5fe4d3b68d941.pdfIn PDF document text
    • https://silajawa.weebly.com/uploads/1/3/4/3/134339193/1359007.pdfIn PDF document text
    • http://gevotumawifal.22web.org/fgo_halloween_event_guide.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387420/normal_600ba76170085.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pavasokunise.epizy.com/fajatomo.pdfIn PDF document text
    • http://memaded.epizy.com/tefuwonofomuvulikuwuj.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ece7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECE7 5664 bytes
SHA-256: 5ed21abd35d492523892cc7d4ff16a1e2cc0048afecda727abcc2082acf6c5d7

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