Malicious PDF — malware analysis report

Static analysis result for SHA-256 8957e0297b763ce4…

MALICIOUS

PDF

54.1 KB Created: 2020-08-29 13:38:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c1c510ab16ada3761a9977541f2f1a11 SHA-1: 620146016d6ffd79099c9970e1358c8144552c50 SHA-256: 8957e0297b763ce4236868984a4cbc220cb32379625f6e5d8b14f2f718ce8ee5
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a mass external link farm, with a critical heuristic firing for a malicious redirector link. The document body, though heavily obfuscated, contains the URL 'https://ttraff.link/wix?keyword=swg+nge+medic+guide', which is flagged as malicious. This indicates the primary purpose is to redirect users to potentially harmful content, 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.link/wix?keyword=swg+nge+medic+guide
    • https://static.usrfiles.com/ugd/b8c837_fd1238f0b46d4037a71f11897567eaff.pdf
    • https://static.usrfiles.com/ugd/cbe7f7_c01375aaf0864ad4abc6d1bff41e099c.pdf
    • https://static.usrfiles.com/ugd/b8c837_bc438509ef674caf95ed813883331695.pdf
    • https://static.usrfiles.com/ugd/b8c837_fdc492d7cda942e8a070cd6234103fdd.pdf
    • https://static.usrfiles.com/ugd/b8c837_cc3593a299b44a2798f240f0b686a572.pdf
    • https://static.usrfiles.com/ugd/b8c837_4ad074537707482d9ef2dda3d167778b.pdf
    • https://static.usrfiles.com/ugd/b8c837_b5458e4420894b33a049d23c8473a727.pdf
    • https://static.usrfiles.com/ugd/b8c837_fd3aa7ddd1d54a7f93fccc8d5cfc3341.pdf
    • https://cdn.shopify.com/s/files/1/0440/0129/6534/files/duvoguvapeg.pdf
    • https://cdn.shopify.com/s/files/1/0431/8766/7104/files/44186536863.pdf
    • https://cdn.shopify.com/s/files/1/0432/3042/9346/files/propellerhead_recycle_free_download_full_version.pdf
    • https://static.usrfiles.com/ugd/b8c837_d12a3f6d021f4c22a88aef88d33fa80a.pdf
    • https://static.usrfiles.com/ugd/b8c837_288914f264e44faca53a812c5ca2abdf.pdf
    • https://static.usrfiles.com/ugd/b8c837_de06e31410784dde8635aea42a71b47c.pdf
    • https://static.usrfiles.com/ugd/b8c837_715346d638d14508a09eaaf21faff564.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_off00009755.bin
f811418c1bc2760230797ce21601fb464593040ab86310dd73bc2ac0edad17d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9755 4936 bytes
font_01_sfnt_off0000a822.bin
88864f4572e03cb32ccc0074f0e63adc01dea85b2840cd7827fe3a6142728a90		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA822 10296 bytes

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