Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f83b72e377d9579…

MALICIOUS

PDF

65.5 KB Created: 2020-08-30 06:26:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 09c12a4d03d6dbe5d36c40a596115c0e SHA-1: 71b71e209bcc0d3cc29d4ca26e8c8708b4c430ca SHA-256: 9f83b72e377d9579e134b2e5ac857114a0a45e95b9f497652e73538686a0520a
160 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link and a large number of embedded links, suggesting a link farm. The document body and heuristics indicate an advance-fee scam lure, likely attempting to trick the user into visiting a malicious URL. The primary malicious URL identified is https://ttraff.cc/wix?keyword=foscam+web+interface.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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/wix?keyword=foscam+web+interface
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/7997453156.pdf
    • https://cdn.shopify.com/s/files/1/0429/1896/9507/files/winob.pdf
    • https://cdn.shopify.com/s/files/1/0437/6638/2749/files/dibujo_tecnico_examenes_de_selectivi.pdf
    • https://static.usrfiles.com/ugd/b8c837_3287f6c608f146e5b9d64f30e8c8d0a0.pdf
    • https://static.usrfiles.com/ugd/41a0b6_9b1e6add992643b891f2e3f79b205b99.pdf
    • https://static.usrfiles.com/ugd/b8c837_7eb12e43ac1a4dfba1729cfb09986dba.pdf
    • https://cdn.shopify.com/s/files/1/0432/8570/8968/files/wikivivetimumoxedekeporef.pdf
    • https://cdn.shopify.com/s/files/1/0440/0028/0726/files/ddd_c_template.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/12729031526.pdf
    • https://cdn.shopify.com/s/files/1/0439/3297/5272/files/guwivapov.pdf
    • https://cdn.shopify.com/s/files/1/0441/3086/1208/files/software_serial_keys.pdf
    • https://cdn.shopify.com/s/files/1/0437/2535/7210/files/nisosamogitusoluluwu.pdf
    • https://cdn.shopify.com/s/files/1/0434/8716/6628/files/78693506258.pdf
    • https://cdn.shopify.com/s/files/1/0437/9131/9200/files/beginner_marathon_training_plan.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/29331550606.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_off0000c27b.bin
2de9459e7b2c9d8840056156bf294d2d6e6541ff62a7f77be1ec071250fbb811		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC27B 5184 bytes
font_01_sfnt_off0000d418.bin
bfdf7faa7f654669b37969d43c24ac87ea91fcf9644a4c948221068a24f77f74		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD418 10840 bytes

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