Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb385bfc7155cf32…

MALICIOUS

PDF

48.1 KB Created: 2020-10-30 08:42:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 6eb55a76d8af459e4bf747cd171e0b40 SHA-1: 9df058f24f08a05846cc43f3541895b482810701 SHA-256: eb385bfc7155cf3289a80b1d1c91188deaae7421d44297ad38e4220e4948b3e3
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.com/123?keyword=roman+mythology+stories+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4370780/normal_5f88690f5e005.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378175/normal_5f9766906bfb0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368487/normal_5f8b11d633d13.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/wilugugo/english_alphabet_writing_practice_book_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/mafavuzenoliki/hp_allied_services_syllabus_2019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/5086/4287/files/the_business_2.0_b2_chomikuj.pdfIn PDF document text
    • https://s3.amazonaws.com/tedowafomaru/wiwixidolizewa.pdfIn PDF document text
    • https://s3.amazonaws.com/tesasubawalozan/88308721380.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/2948/6505/files/fomivose.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0315/8433/files/letter_for_court_from_therapist.pdfIn PDF document text
    • https://s3.amazonaws.com/tesasubawalozan/random_multiplication_problems.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/9741/4595/files/rcog_guidelines_for_liver_disease_in_pregnancy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/3071/5805/files/gravitational_potential_energy_problems.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_off00007cae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CAE 5564 bytes
SHA-256: 625dbd297793ae9948f21f6987e4d7aec6cda702f4306b61dd2676cec5f8aa15
font_01_sfnt_off00008f7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F7C 10624 bytes
SHA-256: a0ac6d82351ef60e89e84b22d7921a98717dcced718403c82fedb7b011318083