Malicious PDF — malware analysis report

Static analysis result for SHA-256 95c9fc11dcd59891…

MALICIOUS

PDF

50.4 KB Created: 2020-09-18 14:41:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b0a2d0248068a4eded7161049acac579 SHA-1: 0776ff0462a0bd0218cae4489af638a89d0e8ea9 SHA-256: 95c9fc11dcd59891b772de147be365ac293129186fc67f835e9093b5f990f99a
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, identified as a 'PDF SEO Link Farm'. One of these links, 'https://ttraff.me/wix?keyword=aps+background+checks', is flagged as a malicious redirector. The presence of a link farm and a malicious redirector strongly suggests an attack pattern aimed at luring users to malicious sites, likely for phishing or malware delivery.

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/wix?keyword=aps+background+checks
    • https://cdn.shopify.com/s/files/1/0434/8480/7334/files/3450739616.pdf
    • https://cdn.shopify.com/s/files/1/0437/6988/8917/files/champion_evaporative_cooler_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/6500/6494/files/19891373928.pdf
    • https://cdn.shopify.com/s/files/1/0440/7230/4805/files/osrs_f2p_money_making.pdf
    • https://cdn.shopify.com/s/files/1/0478/8171/5878/files/ram_expander_pro_apk_root.pdf
    • https://3c09618b-05ab-4079-affd-3c06bff9a48b.filesusr.com/ugd/59deca_6fbcf27eb49f4e7dadfebe3d7554af5c.pdf?index=true
    • https://0b998c2c-f145-4caf-a095-c55366d2255f.filesusr.com/ugd/1b6cec_ac08e49ff155462ba6786eaa8b7dbb5b.pdf?index=true
    • https://6be984a7-b606-4e37-969d-b800add562a1.filesusr.com/ugd/2b25e8_79a21ab79b884c4f9147a0ce40dbbfa2.pdf?index=true
    • https://5b1b9d8c-bd64-4cb0-9124-fdf7e9454b8c.filesusr.com/ugd/49488e_7333413d3231402ca35d56b67cfa75e1.pdf?index=true
    • https://d93d53f8-8fcd-4842-a0d8-f18f6d73b3ae.filesusr.com/ugd/97634b_28760dd8f3d8446e88cc62080d709d26.pdf?index=true
    • https://e85e220f-0d2e-4c30-bb0b-ec697f2d7986.filesusr.com/ugd/0a052f_b42efd5e54534546924f23d628ca564d.pdf?index=true
    • https://668f63ca-b7e6-447d-b608-21f7c0e755e6.filesusr.com/ugd/39a0fd_363f6400e89a496ba2093d7bcf6fa705.pdf?index=true
    • https://445bcb96-08e6-43d3-ae0c-d0d526c8cd33.filesusr.com/ugd/a2e20a_911fc7b16c57425f9173aae946b3e8b4.pdf?index=true
    • https://dc13e3d2-2fb3-487c-8bd1-e532b2024877.filesusr.com/ugd/64f9d2_6071c259f48f4865849f89bd395ec305.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0454/9325/6344/files/16973386895.pdf
    • https://cdn.shopify.com/s/files/1/0427/9068/2783/files/juanita_butler_community_center_greenville_sc.pdf
    • https://cdn.shopify.com/s/files/1/0431/4500/3169/files/bescherelle_anglais_les_exercices.pdf
    • https://cdn.shopify.com/s/files/1/0465/2780/7646/files/sukinasize.pdf
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/52075868801.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007667.bin
a43678b41389b96601a8e49d04ac4d76a7f4bdac7e442fbcb1050568e10fbf3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7667 4272 bytes
font_01_sfnt_off00008572.bin
edf63bca0bb8d184182a585cb699e5ee7c6626221a2fda93779527dbd8dc5dd6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8572 5496 bytes
font_02_sfnt_off00009816.bin
d1ceb88094af8f302cbf0ef0cb38814a3dc93ad0d8b708a1a70ea932dfa79d68		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9816 10580 bytes

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