Malicious PDF — malware analysis report

Static analysis result for SHA-256 90f143f90fd41a00…

MALICIOUS

PDF

57.3 KB Created: 2020-11-21 12:00:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 686df4a16efb33d24af32bac687ef082 SHA-1: 16d977de9d27ccd8418508e2f80533b87a686b53 SHA-256: 90f143f90fd41a0049e9acb876a68a651e5a2b6a1f6410b4f7576445d06f0ec4
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 0.9996

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://traffnew.ru/123?utm_term=how+to+make+easy+wrap+pants PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4375694/normal_5f9ab8b2c89b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408197/normal_5f9d74323f46b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369769/normal_5f885aa8d041e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444866/normal_5fa092ebd587a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367299/normal_5f8b8eaddbdb4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467274/normal_5fb6cc1b1fa1f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377410/normal_5f90d6a208398.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377908/normal_5fae0e3f8e8c6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3b3110f-f37d-4d81-97ea-64400374b4ed/72069002486.pdfIn PDF document text
    • https://s3.amazonaws.com/foneniz/87495766941.pdfIn PDF document text
    • https://s3.amazonaws.com/tapelu/android_app_auto_screen_rotation.pdfIn PDF document text
    • https://s3.amazonaws.com/lanubili/zivalakosemuwimexoxizifir.pdfIn PDF document text
    • https://s3.amazonaws.com/rokuwapesu/axial_skeleton_bones.pdfIn PDF document text
    • https://s3.amazonaws.com/fizaxo/bush-_francis_catatonia_rating_scale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32632bd3-7c4c-4ebd-9d42-75546b65f74c/9051755078.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_off0000a9ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA9CA 5152 bytes
SHA-256: 7c5c65928ffb31943b39a6756eaca27583c1db77e323d740e41d6e69e89c4747
font_01_sfnt_off0000bb4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB4E 8524 bytes
SHA-256: 8e84ab5e6b91543aeb89cc5c03ce55178d883e4132b83d0c3d349bccb1364da0