Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a5777de510c4694…

MALICIOUS

PDF

58.6 KB Created: 2020-11-10 08:48:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0311061586786f3e2eaea01801f5d5c8 SHA-1: b150eae0b1bd2e8889d0f796322f7fc1cb8fcb4e SHA-256: 2a5777de510c4694ed23de587be29c485d9a2b77d11f0bdf550d4939f70b6151
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious intent. It contains a large number of external links, suggesting it's part of a link farm or phishing campaign. The embedded URLs point to various domains, including weebly.com and strikinglyn.com, which are likely used to host further malicious content or redirect users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9923

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://traffking.ru/aws?keyword=deer+jokes+buck
    • https://jevupatumatawi.weebly.com/uploads/1/3/4/3/134377955/jinawa_majajor.pdf
    • https://zevigetadafuwun.weebly.com/uploads/1/3/0/9/130969942/melita.pdf
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/3079835.pdf
    • https://cdn-cms.f-static.net/uploads/4365646/normal_5f9b51035049f.pdf
    • https://zomusabizexeko.weebly.com/uploads/1/3/4/3/134317177/9431306.pdf
    • https://cdn-cms.f-static.net/uploads/4376126/normal_5fa59fa0ac3ff.pdf
    • https://lajoreruxox.weebly.com/uploads/1/3/4/5/134588124/xabuxivaf-punuberit-rozuveb-fobarelubi.pdf
    • https://uploads.strikinglycdn.com/files/6dbce827-81a3-43db-b157-b52839840903/sabujulusob.pdf
    • https://uploads.strikinglycdn.com/files/7f1a9f43-d706-4bc3-8165-bd99fc725339/ride_the_tiger.pdf
    • https://uploads.strikinglycdn.com/files/89219b2c-3066-4631-b59e-eb489840c10d/59713883880.pdf
    • https://uploads.strikinglycdn.com/files/65cdca39-accf-42d8-9755-4ffc0addecc8/71898597534.pdf
    • https://s3.amazonaws.com/wizidimawag/lopivijebepewewemeruxixut.pdf
    • https://uploads.strikinglycdn.com/files/e725cdf3-2390-4abd-a315-e6a8679a0e85/46973132944.pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de95.bin
de47db92bf3f5fc51c91a90cec9a4790fad33f2756616adfc92d32a4e0b11531		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDE95 3136 bytes

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