Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9504a6957a1096f…

MALICIOUS

PDF

44.9 KB Created: 2020-08-31 22:09:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fd80c0d9282ccef48b7dbf56815a4704 SHA-1: e5d7f0481fc92444b36d175239463dfb2550656d SHA-256: f9504a6957a1096f1311c4226927374b9c0a4876aa69baf556023de0666015ad
148 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as a download for 'messenger mod apk naruto'. The document also features a large number of external PDF links, many pointing to static.usrfiles.com, suggesting a link farm or SEO poisoning attempt. The presence of a visual download button lure and a QR code lure further supports the malicious intent of directing users to external, potentially harmful content.

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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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.com/wix?keyword=messenger+mod+apk+naruto
    • https://static.usrfiles.com/ugd/b8c837_13069e5ea59e426e91a94cabcaab5760.pdf
    • https://static.usrfiles.com/ugd/77941b_4de979e1d7484253b84cc579ee6610c1.pdf
    • https://static.usrfiles.com/ugd/36f25b_8c9a3a4ec67943a0869a62c56e1aeaae.pdf
    • https://cdn.shopify.com/s/files/1/0437/7791/7090/files/lasubudal.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kilezibuvi.pdf
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/totafoxosuvunarunamagu.pdf
    • https://cdn.shopify.com/s/files/1/0434/0079/0170/files/moxivatutisajalena.pdf
    • https://static.usrfiles.com/ugd/b8c837_a90d8664a6a343a29c12e1403f3a203a.pdf
    • https://static.usrfiles.com/ugd/b8c837_a76cb41a89294e1ebad1e8a4502a6ebb.pdf
    • https://static.usrfiles.com/ugd/b8c837_39a3f44cf804498ea10c6a147c3aed1e.pdf
    • https://static.usrfiles.com/ugd/b8c837_2a7ab4fa13ef4a3381c92a1aa9ddd512.pdf
    • https://static.usrfiles.com/ugd/b8c837_356b15b450b24591b0eb03bcefb11b74.pdf
    • https://static.usrfiles.com/ugd/19103d_66dcbb9fd1f047c28b961ee8002f63d0.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006263.bin
b7bca9e18e6d2399aa7ccdd549430de61455a25533827294337e77e38be3bb46
pdf-font-stream PDF embedded font (sfnt) at offset 0x6263 4612 bytes
font_01_sfnt_off00007291.bin
a5c11fc0cbbb7f51dc3708b686e016c9ae9f62ccfae1ef6d1e320c6acfa12e74
pdf-font-stream PDF embedded font (sfnt) at offset 0x7291 5316 bytes
font_02_sfnt_off0000849c.bin
d9e69efd92599ed1f5802a9e7fec908c67769786f58e2c771d0bd53d67daea82
pdf-font-stream PDF embedded font (sfnt) at offset 0x849C 10024 bytes