Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc3a317edbb1f37c…

MALICIOUS

PDF

35.6 KB Created: 2020-10-30 06:21:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: b142d31e6b62140b5470f9c67995c557 SHA-1: b0e4c75be21631cdabb934d36f28257a19720453 SHA-256: cc3a317edbb1f37c62a052a923e1663e1375a22250aa0ace1e7f83a8e8552624
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.cc/123?keyword=word+power+made+easy+ebook In 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/d37a8a53-4013-4c6c-95ae-ddf897a1554e/free_download_free_video_dub_portabl.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/8382/2770/files/template_android_html_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/9207/2342/files/8-2_practice_form_g.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/9016/8987/files/44828610096.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d3d0a0d-0bc8-4a20-8c5d-7b6d99590c1f/61045637382.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0caf3c3d-3899-4ea5-ac26-44bd70545286/87211890104.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2348/2530/files/material_handling_system_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/0884/1657/files/kotetobofoduz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/3490/1145/files/draw_a_scientist_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2acbc239-293a-4203-88a8-bd6d174adae4/76666909439.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6386010d-00f6-4427-bcad-b3f788bbf349/dogasike.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/2956/8925/files/10927812968.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_off00004d89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D89 5484 bytes
SHA-256: a97cad345937d23625ec8dd3d83e5f7cf8bcf114b5dcc75d6b1df0b69bdd6690
font_01_sfnt_off00006030.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6030 9956 bytes
SHA-256: 8e9f5da8b5dcfdda14301880d2e46399a61f88ab4dc4e395c1d2ff4b3df75777