Malicious PDF — malware analysis report

Static analysis result for SHA-256 5292514c70a02ea4…

MALICIOUS

PDF

37.5 KB Created: 2020-08-02 10:02:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a643649a6e1c236df723bf1908e1652 SHA-1: 82555ed10c66dbb441a60d45161d11d13be9e487 SHA-256: 5292514c70a02ea4269349b3de74ca2c1025a77f7b4e3ed3f7c6b77224912e85
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is designed to lure users to malicious content. The document body, though heavily obfuscated, contains the URL and a plausible lure related to 'introduction to matlab for engineers pdf'. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning attempt to increase visibility of the malicious redirector.

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=introduction+to+matlab+for+engineers+pdf
    • http://files.craftyjackrabbit.com/uploads/1/3/0/7/130739021/7412474.pdf
    • http://files.lightsoutlet.net/uploads/1/3/0/7/130738622/vekofivom-zukinosukibaxu.pdf
    • http://files.a4ppodcast.com/uploads/1/3/0/8/130814967/3531151.pdf
    • https://cdn.shopify.com/s/files/1/0435/1279/1192/files/john_deere_125.pdf
    • https://cdn.shopify.com/s/files/1/0432/0660/7012/files/sajinisawilezujolipeposig.pdf
    • https://cdn.shopify.com/s/files/1/0431/3877/7249/files/bepimugazafemijurabefulo.pdf
    • https://cdn.shopify.com/s/files/1/0430/8513/6021/files/82676109570.pdf
    • https://cdn.shopify.com/s/files/1/0430/3772/0733/files/26025193048.pdf
    • https://cdn.shopify.com/s/files/1/0431/8117/9037/files/90899259028.pdf
    • https://cdn.shopify.com/s/files/1/0437/4695/1319/files/acca_manual_j_spreadsheet.pdf
    • https://cdn.shopify.com/s/files/1/0432/3462/3643/files/baganijixoniledosasa.pdf
    • https://cdn.shopify.com/s/files/1/0440/6919/1832/files/simplicity_broadmoor_manual.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004775.bin
30466da07ddb2f885d46679374fc19fb8b16db7b37438bb7f33b93a5a872ea97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4775 5436 bytes
font_01_sfnt_off000059cf.bin
81042e624dbb58136e84055e78fd029d54ef4858d4847cf8cea112b123ef9aea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59CF 9792 bytes
font_02_sfnt_off00007b3d.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B3D 4324 bytes

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