Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7fefbe8d63eaa18…

MALICIOUS

PDF

40.4 KB Created: 2020-09-02 02:15:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a422088fe6014b76922e0159a743370b SHA-1: 80453d37af814af53f4953261a3dc75118e2d2c7 SHA-256: d7fefbe8d63eaa184c825db33e74f9153de4fb1e97662c1460b5d8e199289076
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely intended to lead the user to a malicious site. The document body, though heavily obfuscated, contains keywords related to 'Android watch' and 'apple watch', suggesting a lure to attract clicks. The PDF also contains a large number of external links, many pointing to Shopify domains, which is characteristic of SEO link farm techniques used to obscure malicious activity.

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/wix?keyword=android+watch+compared+to+apple+watch
    • https://static.usrfiles.com/ugd/ae15ca_667f944fb7e04826891c91451ac3eb06.pdf
    • https://static.usrfiles.com/ugd/80bfa9_73f3ccd6ce934c09af8fdd33bfa1e49d.pdf
    • https://static.usrfiles.com/ugd/2ca09c_fb35b8253b144dad8bbbd4138ff82aac.pdf
    • https://static.usrfiles.com/ugd/cc15ef_7e8294585c414f6c850af54bee773aca.pdf
    • https://cdn.shopify.com/s/files/1/0458/2752/2723/files/mandala_tattoo_template.pdf
    • https://cdn.shopify.com/s/files/1/0431/9825/1170/files/43671216168.pdf
    • https://cdn.shopify.com/s/files/1/0434/4584/6168/files/babenepolo.pdf
    • https://cdn.shopify.com/s/files/1/0431/2917/6232/files/slideshare_downloader.pdf
    • https://cdn.shopify.com/s/files/1/0428/8629/9815/files/mca_cet_result_2020_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/1081/7180/files/kejevabimufo.pdf
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/84352485314.pdf
    • https://cdn.shopify.com/s/files/1/0430/2009/1555/files/tuxujivatam.pdf
    • https://cdn.shopify.com/s/files/1/0437/9171/2405/files/guideline_hypertension__2017.pdf
    • https://cdn.shopify.com/s/files/1/0428/7594/5113/files/80326797462.pdf
    • https://cdn.shopify.com/s/files/1/0434/0767/1453/files/color_brush_background_vector_free.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_off000060bf.bin
cc0e4c9e1f6568a6bab795111badf957fb4177acabec881a66c071d3ce7a909d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60BF 5216 bytes
font_01_sfnt_off00007262.bin
eb07941473441117b650fa0b7cfba61752f48dd21d6ac216fe56922041351a8a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7262 10124 bytes

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