Malicious PDF — malware analysis report

Static analysis result for SHA-256 08a1e73e26cd20dd…

MALICIOUS

PDF

39.8 KB Created: 2020-08-30 17:29:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 025d371c03957bffee620a7b9c2a1e15 SHA-1: ef6274dd83e6418534b3425fd9835750ee0667d8 SHA-256: 08a1e73e26cd20dda12633985a53fc4c0749690ba81a060c5ceac4cba5424787
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is disguised as a guide for 'cheat engine 6.4'. This suggests a phishing or malware distribution attempt. The PDF also contains a large number of external links, many pointing to userfiles.com, indicating a potential link farm or SEO manipulation tactic to drive traffic to malicious sites. No scripts were extracted, but the presence of malicious links is a strong indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.cc/wix?keyword=how+to+use+cheat+engine+6.4
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_37ebca5215094a1cb1e566d6df96baff.pdf
    • https://static.usrfiles.com/ugd/b8c837_219904eb461341b78c0d4031c6bdbdb9.pdf
    • https://static.usrfiles.com/ugd/b8c837_c4815c83b5ea43cca81076e6b930a981.pdf
    • https://static.usrfiles.com/ugd/b8c837_132628c7ef364e36a9117a681bf6acdf.pdf
    • https://static.usrfiles.com/ugd/f4de5e_995da60ef3fd4cbfba7f48bfc97c6a3c.pdf
    • https://static.usrfiles.com/ugd/b8c837_ed9760caa78041888ba70a56e72639cb.pdf
    • https://static.usrfiles.com/ugd/19103d_ff43c840e4c444e1bfaf280eb3aba455.pdf
    • https://static.usrfiles.com/ugd/33a16d_eb5bd46bcc304932844bc11f8125479b.pdf
    • https://static.usrfiles.com/ugd/b8c837_d981cf72802143b6b7f0c835c72fc7fa.pdf
    • https://static.usrfiles.com/ugd/cc089a_ebd435dbde34419e9548109c8e4ba23f.pdf
    • https://static.usrfiles.com/ugd/277b62_87aa73c4d1974f6c92595218d5630110.pdf
    • https://static.usrfiles.com/ugd/b8c837_86e99511f69c406393a8b64b56dfe739.pdf
    • https://static.usrfiles.com/ugd/b8c837_b11fb9b6e82542b783bc017fea5d10af.pdf
    • https://static.usrfiles.com/ugd/a4d998_89af4ebaf3ac4e29ae6fe047f871c9e2.pdf
    • https://static.usrfiles.com/ugd/2b3f46_1f6aa48d29ee420f95b027ddcda48aeb.pdf
    • https://static.usrfiles.com/ugd/05900a_6f35b6a1bb4c4cee8663f10045d05eb7.pdf
    • https://static.usrfiles.com/ugd/4b874d_e1934a94e689410b9c326a4a2a0a6c82.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005da4.bin
345c66acf36f47a06c78c0a61563ed8bb79802433e66cd9873d76311f781ad7e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DA4 5260 bytes
font_01_sfnt_off00006fa8.bin
b5df7e3d3388c6885fa87d98eb6bf6e80abcbb3c2195cb6b88f23af7dfacf809		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FA8 10196 bytes

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