Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f7dd3d0a704d9b2…

MALICIOUS

PDF

72.5 KB Created: 2020-08-31 15:29:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 08948acbbb110ca8a694e8c92eb60d61 SHA-1: fe87078fa7eb14f1bb83dcdee7daa00d56c46ad4 SHA-256: 3f7dd3d0a704d9b215b2e00c14ee3931dfa41e9160bea96bd6d2ec14a74b8ed5
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF file contains a large number of external links, many of which point to a redirector service (ttraff.com). This indicates a link farm designed to obscure the final destination and potentially distribute malware or conduct phishing. The document body, though heavily obfuscated, contains the malicious URL, reinforcing the attack pattern. No scripts were extracted, but the PDF structure and heuristics strongly suggest a malicious redirection attempt.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=aggresome+formation+microtubules
    • https://cdn.shopify.com/s/files/1/0437/6811/9445/files/joveruleforol.pdf
    • https://cdn.shopify.com/s/files/1/0430/0632/8985/files/zododot.pdf
    • https://cdn.shopify.com/s/files/1/0438/5452/8677/files/functional_group_analysis_worksheet.pdf
    • https://static.usrfiles.com/ugd/b42fd6_0ba8c921d20f4d9cb83131dd3dd16904.pdf
    • https://static.usrfiles.com/ugd/b8c837_f0bbb218a3344a518b3ca18c344ff1bf.pdf
    • https://static.usrfiles.com/ugd/b8c837_550f68f02b6f4b3cba9e291ed6ac1e45.pdf
    • https://static.usrfiles.com/ugd/51c472_0d24b23f903a42fb891344c1d7af92db.pdf
    • https://static.usrfiles.com/ugd/d5415a_342b76a329814976be09cb7e7e68bcd9.pdf
    • https://cdn.shopify.com/s/files/1/0433/3876/0342/files/tasovatutidun.pdf
    • https://cdn.shopify.com/s/files/1/0429/1526/6713/files/godupaduwupexedi.pdf
    • https://cdn.shopify.com/s/files/1/0429/2011/6380/files/sisivixiduwavewavumelez.pdf
    • https://cdn.shopify.com/s/files/1/0446/6756/8291/files/vigaxizojirexevora.pdf
    • https://cdn.shopify.com/s/files/1/0431/6138/7170/files/mosemejolovepawi.pdf
    • https://static.usrfiles.com/ugd/b88e3d_2c3314fc48ea413aadb0759aaf02cc6c.pdf
    • https://static.usrfiles.com/ugd/b8c837_5a2b4f95692f4b54b6e802b59bb32fc5.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_off0000c5aa.bin
23bec318529b34885db391e74462c06eaea6d1ed0780b7df8e50dc594234e9ed
pdf-font-stream PDF embedded font (sfnt) at offset 0xC5AA 5328 bytes
font_01_sfnt_off0000d7bb.bin
87d1fbe6bf5fa4b4fe9f49915bebc4bd919e6b2f5daebd05371f92231ace6352
pdf-font-stream PDF embedded font (sfnt) at offset 0xD7BB 12084 bytes
font_02_sfnt_off0000ff7d.bin
43dd7310e986e37c0562d6efd2a67b6291a0d41fa892ecd43b306c3e7231f7b7
pdf-font-stream PDF embedded font (sfnt) at offset 0xFF7D 16148 bytes