Malicious PDF — malware analysis report

Static analysis result for SHA-256 f74c1c682b54916a…

MALICIOUS

PDF

36.5 KB Created: 2020-08-29 21:54:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: da37b779b4d6f381be262aa1e0fe2181 SHA-1: 55d401fc04034afa8f2d7508ef28815d72ef84e1 SHA-256: f74c1c682b54916a7e7f1fc8829427105f50a5daaa7f043b52a352e510b68d25
168 Risk Score

Malware Insights

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

This PDF document contains multiple embedded links, a common tactic for phishing and malware delivery. One prominent link, 'https://ttraff.ru/wix?keyword=guitar+hero+3+wii+iso+mega', is flagged as malicious and likely serves as a redirector to further malicious content. The document also presents itself as a download lure, indicated by the 'SE_DOWNLOAD_BUTTON' heuristic and the presence of a password-protected archive lure, suggesting a multi-stage attack designed to bypass security controls. The overall structure points to a phishing attempt disguised as a file download.

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/wix?keyword=guitar+hero+3+wii+iso+mega
    • https://cdn.shopify.com/s/files/1/0430/3332/9815/files/ame_no_mihashira.pdf
    • https://cdn.shopify.com/s/files/1/0437/8404/4705/files/introduction_to_sociology_by_shankar_rao.pdf
    • https://cdn.shopify.com/s/files/1/0439/4686/8891/files/tufivup.pdf
    • https://cdn.shopify.com/s/files/1/0436/2698/7680/files/vamazazebexekejaba.pdf
    • https://cdn.shopify.com/s/files/1/0431/5932/2778/files/date_format_c_timezone.pdf
    • https://static.usrfiles.com/ugd/b8c837_1d1555a6ae22482fb1fe6afe0851a9ec.pdf
    • https://static.usrfiles.com/ugd/9ea9b6_4101f4ca1d6c42fe86232d715534e9ca.pdf
    • https://static.usrfiles.com/ugd/b8c837_ef332902125d44f09dab24f6d572cbe8.pdf
    • https://static.usrfiles.com/ugd/b8c837_1e82f934b36f4cf597b373c1c665db9a.pdf
    • https://cdn.shopify.com/s/files/1/0435/8524/1245/files/grunch_de_gigantes_spanish_works.pdf
    • https://cdn.shopify.com/s/files/1/0430/8179/3698/files/b._ed_admission_form_2019_in_up.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_off000050ae.bin
b55b7ddecefd824a7c93f881adf356171cad7a09c4543dc4f46b7aaa1125eea3
pdf-font-stream PDF embedded font (sfnt) at offset 0x50AE 5356 bytes
font_01_sfnt_off000062db.bin
0419998147ee77d6d4e3eee6a0a6a43ca06789f6e783b78832b986cd2e7236aa
pdf-font-stream PDF embedded font (sfnt) at offset 0x62DB 10480 bytes