Malicious PDF — malware analysis report

Static analysis result for SHA-256 35a7bc1c8b5fdaad…

MALICIOUS

PDF

40.2 KB Created: 2020-09-06 15:23:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b4028a2a8c0158e56f0b024f7097968d SHA-1: dd8708cf6f322ad058126a8dc27a30e7f312468e SHA-256: 35a7bc1c8b5fdaad1cb94f1b06f11ccca47a61ca797c3aabe67b0b5e7612286e
150 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a redirector to 'ttraff.me', indicating a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains the same malicious URL and references to 'slayer points osrs guide', suggesting a lure to entice users to click the malicious link. The ML classifier strongly supports the malicious nature of this PDF.

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/pify?keyword=slayer+points+osrs+guide
    • https://static.usrfiles.com/ugd/ea9bdf_4656316516ac4733a9e4930bd35687d8.pdf
    • https://static.usrfiles.com/ugd/1be480_a4c0254519fc40ab84ce7dd5cdd9c6da.pdf
    • https://static.usrfiles.com/ugd/3cb679_a73ef420546245348858fe96fd84f5a6.pdf
    • https://static.usrfiles.com/ugd/8a419d_9858969600d7423ca698796e4850fe68.pdf
    • https://static.usrfiles.com/ugd/865d50_eae699c29a44485690fd326ec1847703.pdf
    • https://static.usrfiles.com/ugd/b8c837_685f752c2e35491fab12d5c193624096.pdf
    • https://static.usrfiles.com/ugd/b8c837_9d6ac805ccef4705aeed88c6bf67e36f.pdf
    • https://static.usrfiles.com/ugd/9df9d6_472d51b0604645ffa8e075492f7fe9c1.pdf
    • https://static.usrfiles.com/ugd/c63dba_e85c94fc897f4266ba74d98b98f3f4fd.pdf
    • https://static.usrfiles.com/ugd/5ed537_ae60191bf57041a38ec60605cfbaa759.pdf
    • https://static.usrfiles.com/ugd/2274a7_12c9d48747ff4bb49276741de0ca3009.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_off0000602e.bin
482ad84c8fd212a264a2cc0f23629196e078d9aad20bfa0bf5bd3afc14dbc50d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x602E 5332 bytes
font_01_sfnt_off00007265.bin
aeb57472aff5f74e249682dd995f32cbe491efbab0d2e7843ca5162ad08ebaf5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7265 9908 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.