Malicious PDF — malware analysis report

Static analysis result for SHA-256 f888580f03f0533c…

MALICIOUS

PDF

45.9 KB Created: 2020-11-02 23:32:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 0da6d95c602a413c334f86c5e6908374 SHA-1: 1469e2d7ae67c3d4bbef6fe414a0cc9a066f78da SHA-256: f888580f03f0533c8db9d64abed2fe1beec0aa56ce4b8bbfa456c56e30032c5f
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://ggtraff.ru/123?keyword=monitronics+security+system+manual In PDF document text
    • https://gozofuma.weebly.com/uploads/1/3/0/8/130874065/papelitosideve.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zetare/45174327023.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/7590/6973/files/5e_aberration_druid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/2812/3295/files/ptz_camera_system_4k.pdfIn PDF document text
    • https://s3.amazonaws.com/wujodibu/22_lr_ballistics_gel.pdfIn PDF document text
    • https://s3.amazonaws.com/tumasun/st_landry_parish_assessor_race.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7870/4536/files/82039686285.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35f386d7-8588-4955-a7f3-2a3b2215404c/faxigumava.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6982/3390/files/27913788949.pdfIn PDF document text
    • https://s3.amazonaws.com/sazixipame/pathophysiology_of_shock_sepsis_and_organ_failure.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_off00006a8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A8F 1572 bytes
SHA-256: 452612010bf92904adaef4bfd0d246ec5f24367bf67eb47c7737d6475a0c45d1
font_01_sfnt_off00007292.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7292 5052 bytes
SHA-256: 88fdc4d16f805b0ee5ee4969519787da4110fce4babb4b27058e54baf42b4e9c
font_02_sfnt_off000083ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83BA 11372 bytes
SHA-256: bd71f3cc90f27feef8a40aac59481bf61e0a50bc30ff07fe3f741d21b9434cf6