Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b425c305615935c…

MALICIOUS

PDF

41.4 KB Created: 2020-08-30 04:15:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a6accc011b67bc7cb8fb764212e8937d SHA-1: 51052ba0e278b950b5983edac55993ab5f80d358 SHA-256: 4b425c305615935c885bd458f8d253fa312e8cc1ed58e93c57bea64b51d4fdc8
150 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. The primary heuristic indicates a malicious redirector link to 'ttraff.com', which is used in conjunction with a lure for a 'Tony Robbins unshakeable free download'. The document body, though heavily obfuscated, contains references to this lure and the malicious URL. The ML classifier also strongly indicates 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.com/wix?keyword=tony+robbins+unshakeable+free+downlo
    • https://cdn.shopify.com/s/files/1/0433/4462/5813/files/defatererilenajavopoje.pdf
    • https://cdn.shopify.com/s/files/1/0437/7618/0376/files/onan_performer_18_xsl_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/2347/3560/files/instagram_photos_videos_chrome.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rinubigelezegir.pdf
    • https://cdn.shopify.com/s/files/1/0433/7870/4536/files/lopeluvavulixopop.pdf
    • https://cdn.shopify.com/s/files/1/0428/0903/2863/files/bowland_maths_alien_invasion_answers.pdf
    • https://cdn.shopify.com/s/files/1/0439/9949/4302/files/94026819967.pdf
    • https://cdn.shopify.com/s/files/1/0432/9019/8180/files/kikanadabi.pdf
    • https://static.usrfiles.com/ugd/e2c250_2390cfe786974528822912f277c57f45.pdf
    • https://static.usrfiles.com/ugd/8b9728_ed4a76873f5a4d3f8adcb1a41d624ce6.pdf
    • https://static.usrfiles.com/ugd/b8c837_e8d0c0e5084f461da533ea19ba69b03e.pdf
    • https://static.usrfiles.com/ugd/d54300_eef4490565ba4b32a53ced91876666ac.pdf
    • https://static.usrfiles.com/ugd/b8c837_8a137896d67c4e77980d30d20b4a3800.pdf
    • https://static.usrfiles.com/ugd/b8c837_7a45e558f3324f9fa88b2b70a111708f.pdf
    • https://static.usrfiles.com/ugd/837d34_fe9143322fcf4b20a451bdd5e55ea9ad.pdf
    • https://static.usrfiles.com/ugd/02beb7_4a6a6c109ccb4c71823f1e2b53d8353b.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_off000061cf.bin
be2638eb33bd424a861abad06c6e5044e6fed7d361e3991ff327ef2c579eedfd
pdf-font-stream PDF embedded font (sfnt) at offset 0x61CF 5340 bytes
font_01_sfnt_off00007409.bin
fe342090889d6dc15c5aa4e75ed6a4bdc71bbf780a9192e06db67368dae1c0d8
pdf-font-stream PDF embedded font (sfnt) at offset 0x7409 10760 bytes