Malicious PDF — malware analysis report

Static analysis result for SHA-256 767512c41f2e8b19…

MALICIOUS

PDF

73.7 KB Created: 2020-12-04 21:04:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 80e684089a154ef7e2becc034ced3a53 SHA-1: df386bea97ac6adbaf7dc866708a7125d2935ba9 SHA-256: 767512c41f2e8b19571f121c1b82df7a96133825b57b393db8e09a1b6033eb6c
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 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/123?utm_term=brayton+cycle+with+regeneration+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4408601/normal_5fc6b688acced.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405437/normal_5f993229c713a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379718/normal_5f90ed02b8984.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473375/normal_5fc6906207c48.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393180/normal_5fc035609f0fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377116/normal_5f8b62411f728.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405206/normal_5fa231d1b42f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370780/normal_5f8f256cc42f3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454811/normal_5fc80c68c6871.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/kavitokolezub/wujavupajawewu.pdfIn PDF document text
    • https://s3.amazonaws.com/dekogamik/tell_me_about_yourself_sample_answer_student.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e26c5bc-53d3-4a4d-90fd-66a977c570f3/kokajiwazuwogi.pdfIn PDF document text
    • https://s3.amazonaws.com/vebisop/46394203682.pdfIn PDF document text
    • https://s3.amazonaws.com/zugutixe/67747295114.pdfIn PDF document text
    • https://s3.amazonaws.com/fogibi/3d_car_body_design_software_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/21809440809.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_off0000e15d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE15D 5480 bytes
SHA-256: e7b6976757777ff16776692817eed0b3c22b58b50317545a1dfe20a0e1f979c1
font_01_sfnt_off0000f41f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF41F 11216 bytes
SHA-256: 4aaabfe952c88949e28a6f61ccd758d6178c0c70c4344389b21a7b61a8a63ea5

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