Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5040708b8c3802d…

MALICIOUS

PDF

69.6 KB Created: 2020-11-14 03:47:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 9fc1aad8264472264116166a498a508c SHA-1: f6fd7aecc075940dcb72284779fb7e3119142491 SHA-256: e5040708b8c3802db6cb2d58f3af73ea9b5a97cb6b4a19b54214d26ca887f5bf
154 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to other PDF files, suggesting a link farm or redirection scheme. The primary URL, trafftec.ru, is likely used to direct users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9711

Heuristics 4

  • 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.
  • 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://trafftec.ru/aws?utm_term=odia+broken+heart+song PDF link annotation
    • https://zurukuwimuso.weebly.com/uploads/1/3/4/3/134325804/46e3371155be7d1.pdfIn PDF document text
    • https://ruwadegefanum.weebly.com/uploads/1/3/4/1/134108857/3735541.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393179/normal_5f9ccc8d574fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369665/normal_5f87da8539af3.pdfIn PDF document text
    • https://kenolafopufa.weebly.com/uploads/1/3/4/5/134528829/5217246.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406782/normal_5faa52c31a1b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380379/normal_5f901ae699469.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366371/normal_5f96ddb76468c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380210/normal_5f9f775fcd4c2.pdfIn PDF document text
    • https://saxibodusazo.weebly.com/uploads/1/3/0/7/130740440/piwesuzawofox.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/624a43ac-3a0d-4bc7-bcb7-fc2e5474617d/jifunegukadekawuku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6779e313-b5be-495d-a656-c9ff94b7acbc/munebusigotidebu.pdfIn PDF document text
    • https://s3.amazonaws.com/lumixi/93699537527.pdfIn PDF document text
    • https://s3.amazonaws.com/gedesisumi/namuxumojimoxupawiga.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_off0000e341.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE341 5288 bytes
SHA-256: ff21dd0d3d3e887be28bd185246f7f78cea04cfd8e17b3c2a2d323eb4601e1c3
font_01_sfnt_off0000f52a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF52A 10376 bytes
SHA-256: b83fa91bdcc312c52fc20ad2884ec9ea7be9cb24f4ae57e8de24ca74a4e3423b

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