Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6245c28155f2187…

MALICIOUS

PDF

47.7 KB Created: 2020-08-02 11:46:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae1145ed5cbc929c6e2806831c33ade4 SHA-1: b92cb52b3d53b4c7eb65968e63824fffe52dcd6b SHA-256: e6245c28155f21872da83001583f911c6f48a3fb62d985f12a3586b77f2f1af1
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as a "Windows 7 recovery disk" download. This indicates a phishing or malware distribution attempt. The PDF also features a link farm, suggesting an effort to manipulate search engine results for malicious purposes. The ML classifier strongly supports the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=windows+7+recovery+disk
    • http://files.tonypalermolifecoach.com/uploads/1/3/1/4/131437740/eaf0f757.pdf
    • http://files.glassbrookvocal.org/uploads/1/3/0/9/130969402/domirar_boxexanepafaki_besameva_bijiviribugokik.pdf
    • http://files.somethingblueweddingdjs.com/uploads/1/3/1/0/131071258/3630513.pdf
    • http://files.glassbrookvocal.org/uploads/1/3/0/9/1309694
    • https://cdn.shopify.com/s/files/1/0428/1312/8867/files/godukidizojiwovasekixu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dedagefegumam.pdf
    • https://cdn.shopify.com/s/files/1/0435/4536/2581/files/97634774284.pdf
    • https://cdn.shopify.com/s/files/1/0428/2590/8383/files/64864945136.pdf
    • https://cdn.shopify.com/s/files/1/0437/8938/5888/files/hubble_telescope_heaven_gates.pdf
    • https://cdn.shopify.com/s/files/1/0440/7335/3381/files/84688168773.pdf
    • https://cdn.shopify.com/s/files/1/0430/7448/6421/files/34467611167.pdf
    • https://cdn.shopify.com/s/files/1/0434/5095/7991/files/rebivifiwatiparinubale.pdf
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/85860544375.pdf
    • https://cdn.shopify.com/s/files/1/0440/1322/4094/files/vodibuvir.pdf
    • https://cdn.shopify.com/s/files/1/0433/0110/9920/files/xalovukuwo.pdf
    • https://cdn.shopify.com/s/files/1/0431/3343/6071/files/28293237533.pdf
    • https://cdn.shopify.com/s/files/1/0432/2702/1480/files/97574399058.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_off00007c8f.bin
bfe5b305b2597c10e6c40593af0e4de750b176587cf81fe476f1ab6a0dd735da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C8F 5100 bytes
font_01_sfnt_off00008e29.bin
22263c8f6efb3939f371b85f00d36c32b74195244bd45e9e50498d1e37a58537		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E29 10360 bytes

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