Malicious PDF — malware analysis report

Static analysis result for SHA-256 efed01f41e1096d5…

MALICIOUS

PDF

37.6 KB Created: 2020-09-17 05:30:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 05595f3a89a988a8ab144b34e4bf2192 SHA-1: cc61388cc1e45e22ae551d386ba4d00fa261980f SHA-256: efed01f41e1096d57ff27a0472c25539fe05458863110b26fe08461a9cf2dc21
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 link farm. One of these links, 'https://ttraff.me/wix?keyword=pacemaster+bronze+treadmill+manual', points to known malicious redirector infrastructure. The presence of numerous links suggests an attempt to lure users to external, potentially harmful, sites. The ML classifier also strongly indicated maliciousness.

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=pacemaster+bronze+treadmill+manual
    • https://70bcfdb9-349e-47d5-8207-3e75e2e9f624.filesusr.com/ugd/31bf02_cf2b50e4a2b64ca88ff81a3f7ed2bfd7.pdf?index=true
    • https://99552406-4c3f-470e-a770-ec8cb9b4c007.filesusr.com/ugd/5bf82b_6da8961dd17b462db61cace956d08645.pdf?index=true
    • https://97f25660-b2a1-424f-81b2-ae0a48dd8851.filesusr.com/ugd/fedf23_86ffcf12de1945d4bb10fb1ff4203c12.pdf?index=true
    • https://2ea67286-88d8-48b0-90fe-af7f4d3fa0a0.filesusr.com/ugd/3f80ec_56009032f69c438eabdc60532726cf37.pdf?index=true
    • https://d11ca2b1-9d86-47aa-83cb-1db75ec73515.filesusr.com/ugd/0a3240_d2aeab17ed0a433c8089cb25eab7a331.pdf?index=true
    • https://f76f4d3f-a425-4596-b566-be35a56900e7.filesusr.com/ugd/83d902_af6294473d64402aa17624df2d96cd9f.pdf?index=true
    • https://ab6ede60-b0d0-4f21-a0ab-aa73ea8f1e39.filesusr.com/ugd/ab059d_21faed28b2d34e02a5661107825137ee.pdf?index=true
    • https://93ca3081-ca58-4b76-a348-5c694470ccc8.filesusr.com/ugd/dcf311_57187aa1db85454ea660582a2ff16b62.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0464/7357/6616/files/sperry_dm-210a_operating_instructions.pdf
    • https://cdn.shopify.com/s/files/1/0454/3024/3484/files/baby_cat_hd_wallpaper.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005414.bin
5a5ef5000649e27b6a4c4344ba0423ebd652a22a89427fe0e3b0a56ecf9fe108		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5414 5276 bytes
font_01_sfnt_off000065f1.bin
66628fd47cbefac90fed3622af85829061243367f51012bfa6a657f3e1f929b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65F1 10568 bytes

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