Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5be3c03176b6b76…

MALICIOUS

PDF

43.6 KB Created: 2020-08-18 15:17:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cec8f72f47c0530552ced8c16aa5e838 SHA-1: 6d0857d84bd9ccaeea02beedee311eb1e985e5d6 SHA-256: d5be3c03176b6b7691eca239f80214db1448fb221e52d1dbd0e44bffd78f4c4d
136 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific malicious redirector URL, disguised as a download for 'Android studio for windows 7 free'. The document body and heuristics indicate a lure for payment or download, directing users to the ttraff.cc domain. This suggests a phishing or social engineering attack aimed at redirecting users to potentially malicious content.

Heuristics 5

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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.cc/pify?keyword=android+studio+for+windows+7+free
    • http://files.precisionhvac.us/uploads/1/3/0/7/130739747/gikigewuj.pdf
    • http://files.bethanylutheranrlf.com/uploads/1/3/1/3/131381819/sizumomonogup.pdf
    • http://files.smithpoolservice.com/uploads/1/3/2/7/132740620/gewulubiz.pdf
    • http://files.jakyoga.com/uploads/1/3/2/7/132740405/d4480fd1.pdf
    • https://cdn.shopify.com/s/files/1/0430/3133/0969/files/58318523286.pdf
    • https://cdn.shopify.com/s/files/1/0433/3882/5883/files/63542116260.pdf
    • https://cdn.shopify.com/s/files/1/0438/2982/1597/files/statistical_data_collection.pdf
    • https://cdn.shopify.com/s/files/1/0433/6861/1989/files/4240507416.pdf
    • https://cdn.shopify.com/s/files/1/0434/0065/9100/files/calendrio_agosto_2020_para_imprimir.pdf
    • https://cdn.shopify.com/s/files/1/0430/6993/1671/files/15_minutes_to_a_better_interview.pdf
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/ladowexokawakizuvome.pdf
    • https://cdn.shopify.com/s/files/1/0429/6572/9429/files/vizopekefodem.pdf
    • https://cdn.shopify.com/s/files/1/0429/9191/1066/files/44613862951.pdf
    • https://cdn.shopify.com/s/files/1/0435/7039/7339/files/34950218395.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/66541571973.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/
    • https://cdn.shopify.com/s/files/1/0433/6861/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e32.bin
975d564494aee40b6b6bc929d6d923358bb09f6995da59bdc21715406b85626f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E32 4820 bytes
font_01_sfnt_off00007ec1.bin
f4b0b1ed495d2e4e0e58d72ac970251084c6f02eae55ecdbfac6d57b5cd6ee1b
pdf-font-stream PDF embedded font (sfnt) at offset 0x7EC1 10144 bytes