Malicious PDF — malware analysis report

Static analysis result for SHA-256 520cc2aab0c917db…

MALICIOUS

PDF

63.6 KB Created: 2020-12-22 06:40:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 25e198bd1a64622348e67c5b6cdf6930 SHA-1: 1081435d97fc4d3e7fdf39d3df5e94dae88ce877 SHA-256: 520cc2aab0c917dbd19b81c1449da065479d77250a8b6237f4da366acb0ab2fa
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://traffine.ru/123?utm_term=area+manager+amazon+air+salary PDF link annotation
    • https://dinelelulom.weebly.com/uploads/1/3/4/3/134308509/7569c548b0.pdfIn PDF document text
    • https://tusidotug.weebly.com/uploads/1/3/4/4/134482214/e4d0617.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366653/normal_5fe01f06d12c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470835/normal_5fb305ce3183c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502268/normal_5fd971a7aafb0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368223/normal_5faadb00bc78a.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/e75b1355-ec86-46e2-84b1-2e3522078595/93415044472.pdfIn PDF document text
    • https://s3.amazonaws.com/wavunot/26840005437.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c690ceca-7cf8-4ffb-9918-9096e8a264c6/vidaworuzebedegesi.pdfIn PDF document text
    • https://s3.amazonaws.com/jizubisetebof/wondershare_mirrorgo_android_recorder.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In 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_off0000bcf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCF8 5148 bytes
SHA-256: 72322606767d47a7a533ce5e0c942692f689bdbb48c60cd47dc7683a61b690b6
font_01_sfnt_off0000ce71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE71 10380 bytes
SHA-256: 08ff67a50416a86c1d2a16e6e4664b18f9c4f479879d1462f4cb7862be0ab5b9

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