Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d24a9f61e06e06d…

MALICIOUS

PDF

45.8 KB Created: 2020-11-02 10:55:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 81a72773501842a2d0650ac861a1a81e SHA-1: 21073de62f7a5dfa4a4563c73049ec3bdd8e8d73 SHA-256: 5d24a9f61e06e06dfc5d357119b482e6aaeee1d71ad8eb46fc2f35e467deac90
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.me/123?keyword=freeway+fury+4+unblocked+games In PDF document text
    • https://cdn-cms.f-static.net/uploads/4374369/normal_5f8d35b9604af.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385021/normal_5f8de8841f12b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381740/normal_5f8eeeb0b7057.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/galiguwifibupotitali.pdfIn PDF document text
    • https://s3.amazonaws.com/jowutoneranemuk/jetepapika.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac73708e-1465-490b-a1b4-3b368bba729b/10421741561.pdfIn PDF document text
    • https://s3.amazonaws.com/vuraradaso/33351436936.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/9854/5562/files/zezawefefinetasumika.pdfIn PDF document text
    • https://s3.amazonaws.com/davawina/somasivulugulolewadedari.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74ae13ec-6001-4576-a98a-dd7453cd279a/morrison_and_boyd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/588b54e2-9bef-47c2-9146-933bf94f98f5/40850504764.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f49b651-4726-4fc8-8080-c515372afd22/zenedejuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/5899/2547/files/dd_swordsage_handbook.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_off000072f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72F6 5784 bytes
SHA-256: 0e3ebcb0081df855462202435f88f89f48e17f2de35efc72097afd35f4fb8600
font_01_sfnt_off000086be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86BE 10480 bytes
SHA-256: bfc07d5eaa9331312ff23ccac2e7eba78bd38b2901117cf674baca6c24e66863