Malicious PDF — malware analysis report

Static analysis result for SHA-256 d15b9bbf7a4e8450…

MALICIOUS

PDF

66.6 KB Created: 2020-12-21 04:00:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 86112744d884e743b0176a388fec7f42 SHA-1: be3b53efd759d7de637e3afa8e469374f7a76996 SHA-256: d15b9bbf7a4e8450232a8f7033a5bb07e9584f52311eb9837e2a9a183ae5d7a8
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a link to a known malicious redirector, which is designed to lead users to malicious content. The embedded text, though heavily obfuscated, suggests a lure related to 'cute cat hd images'. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://gettraff.ru/aws?utm_term=cute+cat+hd+images In PDF document text
    • https://jotuxopa.weebly.com/uploads/1/3/4/2/134265841/7573966.pdfIn PDF document text
    • https://gimitowogavu.weebly.com/uploads/1/3/4/7/134746983/peposixanajog.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466662/normal_5fa9ec5cd6326.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc508ddbf71053ccb2a4bf2/t/5fd685ea89566e781f54b35d/1607894509947/84792986009.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b348bd5-9251-434a-a02e-63d6cefb5a7b/trivia_crack_hack_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97cc0b89-88eb-4849-9b7f-bd62f30796cd/spider_man_far_from_home_torrent_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5fb3dfa8-021f-4f02-9f0d-34d03bfa8d8c/dakokusipowepu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1366588c99b6d37a92994/t/5fd028e23bcf75077a78c57c/1607477475518/rosoxedav.pdfIn PDF document text
    • https://s3.amazonaws.com/fukepez/xasuba.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a970.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA970 2952 bytes
SHA-256: 6f6c5a8fb5e62cfd2b6ff76f758e0f05a98695d5bac735cd019a42cb5e5649ba
font_01_sfnt_off0000b3fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB3FD 5132 bytes
SHA-256: ae7926c11b9fc3b5197cc445ffc0edbd78666ce840354a92097693980e52f3f4
font_02_sfnt_off0000c542.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC542 10840 bytes
SHA-256: 9b8706e92d63e4b5ec26fc5c141f2d25dd53ae031166989898fede8c5aeab48a
font_03_sfnt_off0000e87e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE87E 16164 bytes
SHA-256: 3f70697d8cfd0b9becff5adcad726f9ffedcc5d773cc6f7abbcc82b2f8034994

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