Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5b01f914e11b9e6…

MALICIOUS

PDF

57.1 KB Created: 2020-08-17 03:56:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9673f32b7289e1e9a99fcd3af4ed4aa8 SHA-1: 9974ec6400d60af0d1fe581638278c45b500acf5 SHA-256: e5b01f914e11b9e64049c0a06c26137fdc86aa680be55e6f676ec53f102b7118
128 Risk Score

Malware Insights

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

The PDF file contains a lure related to 'Flu vaccine information sheet 2019' and embeds a large number of external links. One of these links, 'https://ttraff.com/pify?keyword=flu+vaccine+information+sheet+2019', is identified as a malicious redirector. The document also contains a mass of external PDF links, suggesting an attempt to distribute further malicious content or engage in SEO manipulation for malicious purposes. No scripts were extracted from this sample.

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/pify?keyword=flu+vaccine+information+sheet+2019
    • http://files.liquidarmor.eu/uploads/1/3/1/3/131398279/5471553.pdf
    • http://tilebez.robertoborgatta.org/uploads/1/3/0/7/130775350/gegis.pdf
    • http://weraw.mercymedicalarts.com/uploads/1/3/2/3/132303179/tabojimulu_natuwugida_molewoxowe.pdf
    • http://files.kimberlydevlin.com/uploads/1/3/2/3/132303239/11ce16cdc6008a.pdf
    • https://cdn.shopify.com/s/files/1/0428/9688/3868/files/35986164395.pdf
    • https://cdn.shopify.com/s/files/1/0437/0956/3034/files/44424563684.pdf
    • https://cdn.shopify.com/s/files/1/0430/0714/8185/files/mcdonalds_uk_nutrition.pdf
    • https://cdn.shopify.com/s/files/1/0435/7593/5135/files/understanding_blockchain.pdf
    • https://cdn.shopify.com/s/files/1/0439/3664/5275/files/nuzozew.pdf
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/java_interface_vs_abstract_class.pdf
    • https://cdn.shopify.com/s/files/1/0433/4275/8056/files/21546637955.pdf
    • https://cdn.shopify.com/s/files/1/0429/6769/5509/files/best_free_video_cutter_android.pdf
    • https://cdn.shopify.com/s/files/1/0432/8806/8254/files/axis_mutual_fund_redemption_form.pdf
    • https://cdn.shopify.com/s/files/1/0437/1673/9222/files/renarixarobavom.pdf
    • https://cdn.shopify.com/s/files/1/0428/0261/0335/files/xekumikulitorigutijuroviz.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_off0000a1b5.bin
f46f96ff7883acb365df4aabc7562fb4cf50dc031c53c1c5f8a467f039a0cd3e
pdf-font-stream PDF embedded font (sfnt) at offset 0xA1B5 5616 bytes
font_01_sfnt_off0000b4a8.bin
7c66fee7aa091a7efc0bfdba51caf2ad5bd545e29c46bc3779953fb861ccf98f
pdf-font-stream PDF embedded font (sfnt) at offset 0xB4A8 10272 bytes