Malicious PDF — malware analysis report

Static analysis result for SHA-256 59229d548b108f68…

MALICIOUS

PDF

47.3 KB Created: 2020-10-30 14:41:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 9a1f03ab9aa6c03cdc49c28dae169216 SHA-1: 3690326a1c1cf0cde27ea1abebf3c10533ee79ec SHA-256: 59229d548b108f682a1a33dfd28cb13e707f548cb9a156ddae074e95d7973d05
94 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector. The embedded URL, https://cctraff.ru/123?keyword=guitar+hero+smash+hits+song+list, is the primary indicator of malicious intent, likely serving as a lure for phishing or malware delivery. No scripts were extracted, but the PDF structure itself facilitated the malicious link.

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/123?keyword=guitar+hero+smash+hits+song+list In PDF document text
    • https://cdn-cms.f-static.net/uploads/4404955/normal_5f9b5aa68d0b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366047/normal_5f873f266d130.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413118/normal_5f95877edbb69.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381529/normal_5f9a6838db16b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370777/normal_5f8ff545b1a67.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403960/normal_5f9164b3819b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365525/normal_5f8cb23232120.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/6f055793-67eb-440a-892e-e8cf72f6feba/68953500435.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bedcb5da-3218-49ac-88a0-b4263b83eace/81899740227.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c6287e9-432e-4da9-aa37-ecf544ddc4fb/37951984032.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a794e08d-ea95-42e1-9711-4425de556ef8/lifetime_fitness_the_rim_holiday_hours.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/766333cc-47d1-4c39-986a-7409784cc457/1071402061.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18fc4d5a-33fc-4b91-bab0-4f63c16c85b4/24627506026.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d097a97-3172-4e58-96d3-d2721a6d0b3d/tofexigupaxanuworofe.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_off00006df5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DF5 5012 bytes
SHA-256: f2dd51ed3e6db03cd5f942b87fd4c1054d2a1455998bc8e7a5172e7eba800bb5
font_01_sfnt_off00007ed8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7ED8 10360 bytes
SHA-256: b5a988ae5c09b9e38256eef8610c7782f1eba9f6c10e034374e96ce80ba064fe
font_02_sfnt_off0000a232.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA232 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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