Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a9f59a25ace9e9f…

MALICIOUS

PDF

42.1 KB Created: 2020-10-31 12:49:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 974f8d215d77599f316289a2e217848e SHA-1: d57cb29716b12973434017dd39a7bb7df1711caa SHA-256: 3a9f59a25ace9e9f513d281a6e0d5afe3684de601fbcc1f3da5d702f81e4d8ea
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/aws?keyword=our+lady+of+lourdes+raleigh+north+carolina In PDF document text
    • https://cdn-cms.f-static.net/uploads/4370263/normal_5f959b09a67eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387036/normal_5f8f6a43e778d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365555/normal_5f86fc036e552.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375699/normal_5f991121d0a11.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372074/normal_5f8a476fe4057.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/1257/3344/files/ethiopian_physics_grade_9.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/6852/0131/files/vip_fb_auto_followers_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3259/2040/files/tojonujosasag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/6367/1454/files/animales_domesticos_y_salvajes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/5317/8791/files/honda_jazz_sport_2020_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/risisipajole/arnaud_desjardins_libros.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagoba/97565825604.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/1400/5151/files/deewana_mastana_movie_song_wapking.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_off00006373.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6373 5412 bytes
SHA-256: 6d37d69cd3d9912de3a94bddcb44b5f441967e9fd7e5e8020a67a69f7f6b48fa
font_01_sfnt_off000075dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75DD 11088 bytes
SHA-256: 85526411f49761f68df92b0fb144da8624c697da0acbb023731c032eb5a2a183