Malicious PDF — malware analysis report

Static analysis result for SHA-256 886e58a9bfe6c475…

MALICIOUS

PDF

46.8 KB Created: 2020-11-01 00:36:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8bb9f83c0418a3ed92b1723f0c02bb57 SHA-1: 5e9d759e7a4bb987f134498c814e342665c2fca7 SHA-256: 886e58a9bfe6c47593f8b470ead7d9a44140fc52956ef7c258322bf3cdbcfcb0
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.club/123?keyword=relationship+dialogue+overhaul'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the embedded URL is the primary indicator of malicious intent, likely serving as a lure for phishing or to download further malicious content.

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.club/123?keyword=relationship+dialogue+overhaul
    • https://cdn-cms.f-static.net/uploads/4367303/normal_5f8864362f093.pdf
    • https://wipomozexabezi.weebly.com/uploads/1/3/0/7/130776841/2386540.pdf
    • https://saxepuxuk.weebly.com/uploads/1/3/4/4/134472003/e140fe.pdf
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/2a5b38eef3430.pdf
    • https://cdn-cms.f-static.net/uploads/4392195/normal_5f9cf7103a20b.pdf
    • https://mojenosude.weebly.com/uploads/1/3/1/3/131382274/5674643.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/a014b721-fa07-44af-b1f0-1d5349346add/daisy_wheel_printer_for_sale.pdf
    • https://s3.amazonaws.com/wonoti/71876410862.pdf
    • https://s3.amazonaws.com/satedafadusizo/92662441480.pdf
    • https://cdn.shopify.com/s/files/1/0431/3756/4838/files/6694848012.pdf
    • https://cdn.shopify.com/s/files/1/0500/0459/0742/files/sidesync_3.0_apk_for_pc_download.pdf
    • https://uploads.strikinglycdn.com/files/a7fabc9b-9ac7-401d-a98f-30b08714f110/53446027000.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d1c.bin
f1383d7cd59a6739427f7596f1165603adacbacc8f657d4e156367611f565abb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D1C 2828 bytes
font_01_sfnt_off00007725.bin
9f714b3701f860f551c3db1a8126067a59c0c9e1f50736e2eee4c57a374cf759		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7725 5288 bytes
font_02_sfnt_off00008927.bin
f3023a11d077e16e68a9fda53a0aff127d594be69c8a1a949dd1b79f8c15141c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8927 10884 bytes

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