Malicious PDF — malware analysis report

Static analysis result for SHA-256 daf365817caae231…

MALICIOUS

PDF

76.6 KB Created: 2021-01-02 14:56:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: adfe7acbcd51269d28a6680ecf237d49 SHA-1: 73a2eed2b98c62c98aa9b8c255e6effc974e2391 SHA-256: daf365817caae231e966e5ff5e7c930e3e94181104b87cf85b199800b9e75df7
94 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector infrastructure, indicating an attempt to lure the user to a harmful site. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of a malicious URL is a high-priority indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffking.ru/123?utm_term=pink+black+friday In PDF document text
    • https://cdn.sqhk.co/poxudanefisi/LzVihlw/battle_bears_royale_hack_android.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463529/normal_5fe0a6d68b015.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482215/normal_5fb87bbae6b7f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382187/normal_5fb2e62960187.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446390/normal_5fbb8a90a98dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413468/normal_5f9bda7db1cfe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382197/normal_5fe3952971efd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393353/normal_5fe3b45100634.pdfIn PDF document text
    • https://cdn.sqhk.co/xasexuwosul/cVjagUk/classic_nes_ice_climber_gba_rom.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366000/normal_5f87058ec274d.pdfIn PDF document text
    • https://cdn.sqhk.co/gatutojuse/RP7lCar/guess_the_flag_sporcle.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464877/normal_5fd1d82d913ea.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/3cb5eb48-d695-4202-8aae-8bf34f2b3f26/honeywell_wifi_thermostat_rth8580wf_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/988502be-ab68-4f1e-bf08-01e0c9cb2e84/72688571924.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b564ff42-e47a-417f-8cc5-adb5ab4bd132/68392171988.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_off0000e5e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5E5 5144 bytes
SHA-256: f7414d8f431d5c56c9bcf66f96061225c4cf344a5c043f44f2138eb2c5349f62
font_01_sfnt_off0000f779.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF779 1912 bytes
SHA-256: 80a4cfd859b9bb1e8faa36d0b2de836cd4647eeb869bd113d8e2047271df502c
font_02_sfnt_off000100a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100A8 10664 bytes
SHA-256: 773e2050e6a9d21658027c86b032e0d5dd5f639579a1f4ddb9c5d3b3d7328531

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