Malicious PDF — malware analysis report

Static analysis result for SHA-256 986d1b946c5efb3c…

MALICIOUS

PDF

43.7 KB Created: 2020-11-03 20:41:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 48d3ad4f98db391428d0948287ad8835 SHA-1: 22a8881f3b172514e165634c8e77f1afcb4755b5 SHA-256: 986d1b946c5efb3c9ee710001240f7dfba781325a0c8cb8ba00093539a0985d6
94 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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://cctraff.ru/123?keyword=catz+5+game In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365584/normal_5f894eebcb8cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383327/normal_5f8b810ac1d09.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366042/normal_5f98285a4e598.pdfIn PDF document text
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/8767144.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/lanorolowu/arrancame_la_vida_libro_descargar_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/kizugokofo/uc_health_stadium_fireworks.pdfIn PDF document text
    • https://s3.amazonaws.com/biwubeleba/ragevisuxanedoxotefi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b9a79d6-e3ca-4b64-a3b3-5f2b08a89b06/22988454064.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9bca619e-208b-4d9d-aef6-d6b28a70d0c7/fem_matlab_code.pdfIn PDF document text
    • https://s3.amazonaws.com/minaxigevani/under_the_rug_synonym.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8aa31ed2-86f9-44a9-8433-fbd0cc6ef013/498031964.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_off000060a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60A9 4420 bytes
SHA-256: 25653aee21def5d23534544dadca443f77df4f847900d56b146bee378c0dea6d
font_01_sfnt_off00006fbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FBE 10716 bytes
SHA-256: 9943307c1c94a4be20ea7233103ca4496c06f01b65b85943a5fea13625184131
font_02_sfnt_off0000943a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x943A 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71