Malicious PDF — malware analysis report

Static analysis result for SHA-256 35a0e39608c8c6e3…

MALICIOUS

PDF

47.8 KB Created: 2020-07-30 23:41:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1b1e2fe86446019f647112f5c58b6fa4 SHA-1: 2e16cbe26ad1a66b3d9fcb2c469bd3daab168e01 SHA-256: 35a0e39608c8c6e3f6f84c1b409880173acc3919717357216785c76c82ba6b17
128 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to external PDFs, many hosted on Shopify. The presence of a 'download button' heuristic further suggests a lure to entice users to click on these links, likely leading to malicious content or phishing pages.

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.com/pify?keyword=ielts+actual+test+listening+and+speaking+pdf
    • http://files.prodigyracingassociation.com/uploads/1/3/0/7/130740502/fikibisobobupunaw.pdf
    • http://files.nnpsofaz.org/uploads/1/3/1/4/131437216/ffac8b23d.pdf
    • http://files.thoroughlymodernmaker.com/uploads/1/3/1/6/131606330/jidaf.pdf
    • http://files.massagemarketing101.com/uploads/1/3/1/3/131380292/62654307.pdf
    • http://files.massagemarketing101.com/u
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/27622062760.pdf
    • https://cdn.shopify.com/s/files/1/0433/9050/1020/files/25842907320.pdf
    • https://cdn.shopify.com/s/files/1/0438/4522/2557/files/79391524030.pdf
    • https://cdn.shopify.com/s/files/1/0428/5943/0047/files/buxelikozowurowigewamono.pdf
    • https://cdn.shopify.com/s/files/1/0431/0892/5602/files/50223925471.pdf
    • https://cdn.shopify.com/s/files/1/0434/2503/8497/files/vixurekilomubotoge.pdf
    • https://cdn.shopify.com/s/files/1/0427/7580/6119/files/lavipateviwokobej.pdf
    • https://cdn.shopify.com/s/files/1/0430/4535/5674/files/dofimimazoza.pdf
    • https://cdn.shopify.com/s/files/1/0428/4206/3004/files/nenojok.pdf
    • https://cdn.shopify.com/s/files/1/0432/6470/4662/files/5816010095.pdf
    • https://cdn.shopify.com/s/files/1/0435/9897/1038/files/mimosigusodatidefipu.pdf
    • https://cdn.shopify.com/s/files/1/0436/2865/8848/files/dofazivikunirupizibit.pdf
    • https://cdn.shopify.com/s/files/1/0433/4849/2438/files/winowasarexumafu.pdf
    • https://cdn.shopify.com/s/files/1/0433/6631/8230/files/wudogevusagarolodefiwiji.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_off000069ed.bin
0c0254f3bec280066af52a46e3d7e968d43fc2e7c424cb60d0586dc5e59e3b5a
pdf-font-stream PDF embedded font (sfnt) at offset 0x69ED 5000 bytes
font_01_sfnt_off00007aff.bin
9aa01fc8c8564e36950297ce5a8786ae9db7f416764750fd69981b422f45e6c6
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AFF 9720 bytes
font_02_sfnt_off00009c6f.bin
b8fa99db91b4e2a38fb01ca4f8dfd1970d271bfdaf7323161a8b02e369b8fc98
pdf-font-stream PDF embedded font (sfnt) at offset 0x9C6F 16120 bytes