Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc1bb9ed58111af9…

MALICIOUS

PDF

67.6 KB Created: 2021-01-13 17:18:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 80ee8f4c74ab4392a005ed8ef1dbfe1e SHA-1: e7b7b465e0f65611de098cb8da2b06792e8b22cd SHA-256: cc1bb9ed58111af9e9c8a3e2b283d3781b62a282155434342f7bf9640c35b94c
154 Risk Score

Malware Insights

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

The PDF contains numerous external links, a technique often used to redirect users to malicious websites for phishing or to download further payloads. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, and the ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggests malicious intent. While no scripts were directly extracted, the PDF structure and embedded links are indicative of a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7962

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 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://traffnew.ru/aws?utm_term=how+to+speak+confidently+in+public+pdf PDF link annotation
    • https://pejopazuzaguwoz.weebly.com/uploads/1/3/2/8/132815183/4618019.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366646/normal_5fd094bef1004.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385427/normal_5fe5c51f1dc05.pdfIn PDF document text
    • https://cdn.sqhk.co/pawijilabu/Wgciege/singing_machine_sml385btw_instructions.pdfIn PDF document text
    • https://cdn.sqhk.co/togokitaz/c9jhagd/fastlane_road_to_revenge_hack_mod_apk_download.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/kuboki/10639225657.pdfIn PDF document text
    • https://s3.amazonaws.com/kefiperizonofu/71940313072.pdfIn PDF document text
    • https://s3.amazonaws.com/nafibanefexex/android_app_developer_jobs_in_india.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/biografia_de_pierre_bourdieu.pdfIn PDF document text
    • https://s3.amazonaws.com/zodawanuror/37625142736.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_off0000e2eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2EB 5412 bytes
SHA-256: f957ae337e59932d2fd125c5cbf59a1d840c8119b7cf4a6fb8a25ca512b84cc0

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