Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d7ae940f4a18846…

MALICIOUS

PDF

46.0 KB Created: 2020-08-16 22:09:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e8c6396be8481094b3e9ce532188a2f SHA-1: bc44682027f9c0afadffbfb943f7e41105a0b874 SHA-256: 8d7ae940f4a18846e36aaad5dadb858547402f67636a765db94629837e4db76d
128 Risk Score

Malware Insights

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

The PDF contains multiple external links, including one identified as a malicious redirector pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text suggesting a 'budget spreadsheet format' lure, and a call-to-action phrase was detected. This indicates a phishing attempt designed to redirect users to malicious content.

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=budget+spreadsheet+format
    • http://files.well-estar.com/uploads/1/3/1/6/131637034/91a0067.pdf
    • http://files.bethellutheranschool.org/uploads/1/3/0/9/130969185/3777456.pdf
    • https://cdn.shopify.com/s/files/1/0430/9578/5621/files/bodezibinamamera.pdf
    • https://cdn.shopify.com/s/files/1/0434/0305/1175/files/biosecurity_in_poultry_production.pdf
    • https://cdn.shopify.com/s/files/1/0434/0016/7589/files/75455177060.pdf
    • https://cdn.shopify.com/s/files/1/0431/8615/9767/files/nolegurisoluzufenav.pdf
    • https://cdn.shopify.com/s/files/1/0427/5293/4044/files/item_id_minecraft_pe.pdf
    • https://cdn.shopify.com/s/files/1/0428/7175/0823/files/wewoferotafaxuduzonuvonan.pdf
    • https://cdn.shopify.com/s/files/1/0433/7437/9157/files/1738886747.pdf
    • https://cdn.shopify.com/s/files/1/0434/1855/0429/files/baby_boy_names_in_tamil_with_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0435/6354/8833/files/4133842348.pdf
    • https://cdn.shopify.com/s/files/1/0430/7917/2257/files/59064805710.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_off00005e93.bin
e3ccbdb4fc6134999282212481809900284f541038f4c166aedbd9efbc5cdd65		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E93 5472 bytes
font_01_sfnt_off00007113.bin
a7ced43086d2b7918451d4d15e2f44b066c9b7664bfc8bee75c734d2ee54c5bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7113 10572 bytes
font_02_sfnt_off00009575.bin
aad9bc0f36eadc3314e08670b59090120051e308b357201f134af3d0b781b2b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9575 16312 bytes

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