Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc5592d2e11ff40c…

MALICIOUS

PDF

43.1 KB Created: 2020-09-02 05:28:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: acf5b9ed3281d6fc72f9abcfd6ba356d SHA-1: ebf753a8995fa3f5f6a5fc9f2d28e48a595cc4d6 SHA-256: cc5592d2e11ff40c5ac0cd31ad0db852577ad4f9115f2c1ccb0fcaa50dace01d
150 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though partially corrupted, contains text related to 'personality development pdf' and includes the malicious URL, suggesting a lure to trick users into clicking. The presence of a malicious redirector link and the ML classifier flagging it as malicious strongly indicate a phishing or redirection attack.

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.ru/pify?keyword=meaning+and+definition+of+personality+development+pdf
    • https://cdn.shopify.com/s/files/1/0432/2990/5058/files/application_of_1st_law_of_thermodynamics.pdf
    • https://cdn.shopify.com/s/files/1/0454/3918/9142/files/36406889895.pdf
    • https://cdn.shopify.com/s/files/1/0462/6120/7194/files/82406673149.pdf
    • https://cdn.shopify.com/s/files/1/0439/2534/0328/files/zozumelepibozigeduv.pdf
    • https://cdn.shopify.com/s/files/1/0440/6365/4040/files/exercises_for_lateral_epicondylitis.pdf
    • https://cdn.shopify.com/s/files/1/0437/1791/8875/files/14259893070.pdf
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/5659358401.pdf
    • https://static.usrfiles.com/ugd/b77b08_37a1b866df2c47d7b42fa497bc9273fc.pdf
    • https://static.usrfiles.com/ugd/af0aa9_16d511ed12144528b074d2c9bc2e79c4.pdf
    • https://static.usrfiles.com/ugd/9f06f8_cf77ad9782d14d97a34848a8904dead1.pdf
    • https://cdn.shopify.com/s/files/1/0433/8181/7494/files/gap_analysis_template_digital_marketing.pdf
    • https://cdn.shopify.com/s/files/1/0433/7745/9365/files/20715392160.pdf
    • https://cdn.shopify.com/s/files/1/0436/6221/3270/files/madden_15_strategy_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/5325/1751/files/75466716350.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_off00006aa5.bin
c00dd415a65b789843358e55ea140ea3c37658bc702851c1107d77ed6aabadb2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AA5 5528 bytes
font_01_sfnt_off00007d7d.bin
825a81e1e03168672a88006e553d97678971c65d8fd51eab9678ea93ad2612f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D7D 9940 bytes

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