Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1e374d05897fa6d…

MALICIOUS

PDF

76.3 KB Created: 2020-11-27 23:04:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 23b411c1137362220b1b776f1ebb2e05 SHA-1: 8adb8885d23c41bbe87ac7cf431027bfa0abe2cc SHA-256: e1e374d05897fa6d22fcb7da0eb378115d57852572c6378d8b0db832ec8ee6ec
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'https://traffset.ru/123?utm_term=sega+mega+cd+retropie', which is likely the primary objective of the attack. The document body content is heavily obfuscated and unreadable, suggesting an attempt to hide malicious intent.

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://traffset.ru/123?utm_term=sega+mega+cd+retropie PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4489601/normal_5fbbc330ab339.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368497/normal_5fa42c88729eb.pdfIn PDF document text
    • https://sunawakajisume.weebly.com/uploads/1/3/4/3/134324988/1828740.pdfIn PDF document text
    • https://xemakoxen.weebly.com/uploads/1/3/4/3/134320116/5d880c1b.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/magapeguwabe/halloween_anime_girl_creator.pdfIn PDF document text
    • https://s3.amazonaws.com/jaxesabi/60443242809.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxalirudidel/tri_state_recovery_alabama.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66327037-e080-4503-8d5b-891f3130091c/dovop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d251ad6-1fe5-48e2-86ba-640c2e668da4/air_propulsion_car_shark_tank.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63808c7c-252e-4eee-b779-cbecd9c3ea98/32343866205.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d003.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD003 4920 bytes
SHA-256: 1ffa424a035c41d950f4818ba309207dfc2e9237bbf1d7e00eb059b9cf638c85
font_01_sfnt_off0000e12c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE12C 5284 bytes
SHA-256: be8915bd67b25ca539bb48ba33dc322911b406a51e417ce4fdb92eb87f912501
font_02_sfnt_off0000f312.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF312 15916 bytes
SHA-256: 54637f8bd18044686e78a69a0018ae8e7cc4871b6f6ad22e535624d1f091a20a