Malicious PDF — malware analysis report

Static analysis result for SHA-256 c461a3f2f30feccd…

MALICIOUS

PDF

58.4 KB Created: 2020-08-29 23:25:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2a1ec847b22c7c709dde7cd59accf243 SHA-1: 6e962f07a28f826f0926bb137a6998cbf716a064 SHA-256: c461a3f2f30feccd4d9cd4b8257c280e7948cf8269e2653248df87a81f391394
130 Risk Score

Malware Insights

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

The PDF file contains a lure for a free English speaking course, but analysis reveals it links to a malicious redirector at 'ttraff.ru'. This indicates a phishing or social engineering attempt to direct users to harmful content. The presence of numerous links, including one to a known malicious redirector, strongly suggests a link farm or redirection tactic. No scripts were extracted, limiting the analysis of direct payload execution.

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.
  • 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=free+download+rapidex+english+speaking+course+book+pdf+in+gujarati
    • https://cdn.shopify.com/s/files/1/0429/8099/9321/files/74689736778.pdf
    • https://cdn.shopify.com/s/files/1/0440/4209/2694/files/discord_advertising_servers.pdf
    • https://cdn.shopify.com/s/files/1/0427/9032/2342/files/3429907213.pdf
    • https://cdn.shopify.com/s/files/1/0432/6028/0982/files/45563406215.pdf
    • https://cdn.shopify.com/s/files/1/0439/1672/2344/files/58502867073.pdf
    • https://cdn.shopify.com/s/files/1/0433/9413/8277/files/6482732242.pdf
    • https://cdn.shopify.com/s/files/1/0431/7426/4992/files/kelipozoj.pdf
    • https://cdn.shopify.com/s/files/1/0440/3711/1958/files/65592865503.pdf
    • https://static.usrfiles.com/ugd/b8c837_c79c3b56b2d8456cb416a272aa5cb81e.pdf
    • https://static.usrfiles.com/ugd/b8c837_ff482b99a2044902bd9b5e8ca62e7d65.pdf
    • https://static.usrfiles.com/ugd/b8c837_feea9c8c46c14084a1ed97d141a35646.pdf
    • https://static.usrfiles.com/ugd/8b2c09_eefb703d85914f7fbb8a2c1746536eee.pdf
    • https://static.usrfiles.com/ugd/b8c837_bad49abe751b4e6fbf4d31c8e0ebd9e1.pdf
    • https://static.usrfiles.com/ugd/238140_0c3f7c9ccf0a4e71bb513891c28b9be2.pdf
    • https://static.usrfiles.com/ugd/b8c837_b92fa0b6174c46968c8cddc0ad240f12.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_off000096b2.bin
a420b4b28255f91d35eacbd51b88f188031218f12a11b0860da4b1946f07a60c
pdf-font-stream PDF embedded font (sfnt) at offset 0x96B2 3764 bytes
font_01_sfnt_off0000a401.bin
34401e0038a56e72d32d24e8a8e2cd232546cc33ed00fa0d7d3223e4db145ccc
pdf-font-stream PDF embedded font (sfnt) at offset 0xA401 5812 bytes
font_02_sfnt_off0000b7da.bin
1590c2505bf55c9dfc9fefc43eeb1867deefd740b917bfd9b08afd8da8bcb183
pdf-font-stream PDF embedded font (sfnt) at offset 0xB7DA 10356 bytes