Malicious PDF — malware analysis report

Static analysis result for SHA-256 10dca1b31c63443c…

MALICIOUS

PDF

56.9 KB Created: 2020-11-04 10:23:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 0867afb318b44aebab49eba68f393dac SHA-1: dbf807335dd29632ba2efdb39b0041643f13bf2f SHA-256: 10dca1b31c63443c72e824e7e6fa60e8c7ad870ac90aa388e16b819e62281930
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://ttraff.ru/123?keyword=ge+sensor+microwave+oven+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4394061/normal_5f8ee75587c00.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365607/normal_5f887be0afc47.pdfIn PDF document text
    • https://zalawevovupat.weebly.com/uploads/1/3/0/9/130969727/2048914.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369487/normal_5f8b9819d93b6.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/c588d364-8172-403c-adb4-8ce07f2677d9/xenoverse_2_ai_mod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f001fcf-ce2c-49ee-bcde-80e069ddec95/tudujesaxid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c9048e9-4b3a-4b02-b8ea-afe185eaaa4d/avatar_the_last_airbender_kissanime_season_1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc763906-02aa-4a23-842f-0a36531385fa/17450120976.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9adac89-b390-4ce8-96b9-6953dbf767ef/lajobi_pinehurst_lifestyle_crib_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/booster_pump_troubleshooting.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb8ff3c4-2970-4a9a-9603-672f60214e3a/42688827072.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_off0000a132.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA132 5128 bytes
SHA-256: c8f4ad597caa0174a16199556d3a808adb8f9b4347cc24d32da8f6e25f260697
font_01_sfnt_off0000b2a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB2A5 10584 bytes
SHA-256: 4daa6f38eea2f20f44a46941bc6c0bc580d0b8805f5650c5dae2763f7a2c09a4