Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c40523c2337e7ad…

MALICIOUS

PDF

88.7 KB Created: 2020-12-24 02:38:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: d813c7a76e7cc744f3a7db8b682f63b6 SHA-1: be5ca380e9d432948f29c7acc26c4130a5e527ae SHA-256: 5c40523c2337e7ad82a7c227d913308fa8699e975a7268ebf6b17621d0c3ed0f
96 Risk Score

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 0.9997

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://trafficel.ru/aws?utm_term=babson+college+campus+map+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4377905/normal_5f99c105ecac5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386828/normal_5f93ca2c4e440.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425209/normal_5f9fa4d3dd185.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368469/normal_5fb6cf820f075.pdfIn PDF document text
    • https://dudulisatosix.weebly.com/uploads/1/3/1/6/131637211/1558802.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380523/normal_5fa0b2ed1d8f5.pdfIn PDF document text
    • https://xujajogasugoni.weebly.com/uploads/1/3/4/5/134514057/c1ec9cda168ef4b.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/penefelomiju/72602249287.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/biogeochemistry_book.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/st_dorothy_s_church_glendora_ca.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18c5fc5c-701d-4185-8f8e-ca0026ea40c4/xiwuzafaragukapaze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d17a9ba-3f75-43cb-802b-3995c6329656/medobaxadamove.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_off00011d6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D6C 5568 bytes
SHA-256: fd12e39d9297fa10af24f6e7609a5ad270a444278b680494b47ba2b735086eeb
font_01_sfnt_off00013047.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13047 11112 bytes
SHA-256: afcf8b09dadce9c19fb50465ba774a30e9e4cb57e0f9703d289cf1d5e08c195c