Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f6b2d9abf6ff264…

MALICIOUS

PDF

58.5 KB Created: 2020-12-11 06:29:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 26720accac5f25cea16664f244b7cde9 SHA-1: 90263d382106ed2e4c78ddb5680fce87696eca8d SHA-256: 8f6b2d9abf6ff2641f99ac03fca3fa1bafd3a3fb17e8770d011b69e5451a6d90
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 0.9981

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=mckee+biochemistry+5th+edition+pdf+free+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4469831/normal_5fa4f5c01e861.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380881/normal_5fb36a9a07cff.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448985/normal_5fcbb2b527cf8.pdfIn PDF document text
    • https://wedebiki.weebly.com/uploads/1/3/0/9/130969436/49bf5.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/403ef8dd-5985-4917-9c86-132b23875a06/68268363424.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4eeb6457125654312f80/1606373104417/el_dinero_como_patron_de_pago_diferido.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5cfb864f-a7ee-4062-8459-fa65dc52c4c0/usb_complete_the_developers_guide_fifth_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/259c7c0a-546e-414c-96a6-d6dba9f707a7/abortion_definition_cdc.pdfIn PDF document text
    • https://s3.amazonaws.com/rejiner/5211611128.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_off0000a8ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA8AB 5920 bytes
SHA-256: 4aab948f57197f10401530fe3b2349cde1d4278b1ac9c41bf20b0615e26256b2
font_01_sfnt_off0000bcd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCD1 9528 bytes
SHA-256: 91c4cc3681b1ae0b3ae05b6a7ba7c2b891bff00297a6b23e3be019b4bebaa765

Open this report in the interactive analyzer, or submit your own file for analysis.