Malicious PDF — malware analysis report

Static analysis result for SHA-256 db8520653d8b63f0…

MALICIOUS

PDF

84.4 KB Created: 2021-03-12 04:13:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 74d5a3e5573deb9082ff5417216c751f SHA-1: 2f9253c5acee2f745eba97ecefb9b032a75d1664 SHA-256: db8520653d8b63f040ee7d321042ffc471c9658be4f2c4ed4a45244b7ed56089
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that mimics a search result for a popular game, likely to trick users into downloading malware. ClamAV and ML classifiers flagged this file as malicious, indicating a high probability of malicious intent. The presence of multiple external URIs suggests the document is designed to redirect users to malicious download sites.

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://jacksth.ru/wix?keyword=gta+3+apk+download+obb PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4416930/normal_5fec4faa4a06a.pdfIn PDF document text
    • http://zaxevef.getenjoyment.net/fender_hot_rod_deluxe_iii_limited_edition_tweed.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450512/normal_5ff278222e981.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454559/normal_5fe4e7f4c5310.pdfIn PDF document text
    • http://tumuduwaju.mypressonline.com/kujibis.pdfIn PDF document text
    • http://ronifibofizet.medianewsonline.com/71439577699.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383132/normal_603de544b2014.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479436/normal_6023e20063f70.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368950/normal_5fe8e34e51fb2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447915/normal_5fe463fb0f2e2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467038/normal_60298b781f21a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496380/normal_602b78acb9cb1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484818/normal_5ff54e9bb4c57.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476150/normal_5feb648245f81.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/zuguvoxoki/90853904831.pdfIn PDF document text
    • https://s3.amazonaws.com/dosalapasenow/85622328140.pdfIn PDF document text
    • https://s3.amazonaws.com/takateg/65971824271.pdfIn PDF document text
    • https://s3.amazonaws.com/popilo/does_my_washer_have_a_lint_trap.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_off0000f02e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF02E 5172 bytes
SHA-256: e65427211b5cef9c76f21ec4741e6a974186f3e7389818776fce9e9de261dd72
font_01_sfnt_off000101eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101EB 1800 bytes
SHA-256: 6d2a3a16cc464ce72cf05976c7f96a31c93af2202e0dc760c37a694345e222ee
font_02_sfnt_off00010a7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A7B 10236 bytes
SHA-256: 4af4fd6496f59c2bdafdb594803850cbd777a31f4d35cc9b8c465d9e77fca8a0
font_03_sfnt_off00012dcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DCB 16376 bytes
SHA-256: 4954ddec54c61b6acc7eddbac306bc890d05f3afdfcf3ae890c7612da0a7d668

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