Malicious PDF — malware analysis report

Static analysis result for SHA-256 7596d38aa534d6ad…

MALICIOUS

PDF

74.5 KB Created: 2020-12-29 22:48:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 4d1f206d1d3cb3b9358ecc5dcc9eee41 SHA-1: 7bc0488584f5a11b106a688769534cfbed0bf683 SHA-256: 7596d38aa534d6ade752ca93d71b1e6f93cd96206ea4b4e0d99b6c3243c12b5c
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely used to deliver a secondary payload or redirect the user to a phishing site. The document body, though heavily obfuscated, appears to reference software, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffnew.ru/strik?utm_term=magi+magic+video+editor+pro+mod+apk PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4443578/normal_5fba17331b844.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468274/normal_5fb6cc1e36eb6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490949/normal_5fb2eb7608173.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403818/normal_5f957e73dc604.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371807/normal_5f9d3ab9c47a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366346/normal_5f89d8ac3ca18.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481665/normal_5fbf13e35ae53.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/jowutoneranemuk/bumifuvaz.pdfIn PDF document text
    • https://s3.amazonaws.com/daraniwekamidir/mesiped.pdfIn PDF document text
    • https://s3.amazonaws.com/pafiganovavi/koripepiwubabepip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/920ac783-a5ac-4fd2-ad1d-f201d01c0c89/wicklow_mountains_national_park_weather.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d105.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD105 5312 bytes
SHA-256: b3ce7cb7983ba2278fda8488e97395bf79ca63b1616b1c8f321ea5b90124d138
font_01_sfnt_off0000e319.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE319 10752 bytes
SHA-256: 68d266c258cb1cab53d4b32141d2399b5bbfd4d2b25f3c6f3d3cfcabb2419200
font_02_sfnt_off0001081f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1081F 16120 bytes
SHA-256: 088aab9df5963034d16a5dd855bc4d58a83835f06bb5452f36401e672a7db626

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