Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe01ffb7997f32bc…

MALICIOUS

PDF

47.7 KB Created: 2020-08-08 06:28:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b914a5f46df2681140430c3af76f52a6 SHA-1: 2b0a58c86a90d5f348872453f622276c783f79e6 SHA-256: fe01ffb7997f32bccaf8e947fb85cc1e9067db6ee61f68523a4a98eafeeaf3bd
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, https://ttraff.com/pify?keyword=air+source+heat+pump+systems+pdf, is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to the same topic and the malicious URL, suggesting a social engineering lure to drive traffic to malicious infrastructure.

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=air+source+heat+pump+systems+pdf
    • http://dibesefet.levinoguess.com/uploads/1/3/1/4/131483372/xiligiminilawekev.pdf
    • http://files.molivery.ee/uploads/1/3/0/9/130969446/wujusikoze_sasotuno_zenafuvufol_fivaduv.pdf
    • http://files.headandneckultrasound.com/uploads/1/3/1/4/131453031/betijuge.pdf
    • http://files.holytrinityri.com/uploads/1/3/1/4/131453684/toroka.pdf
    • http://files.arfawrites.com/uploads/1/3/2/7/132710711/310ecb211445.pdf
    • https://cdn.shopify.com/s/files/1/0434/1969/7310/files/9394929456.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gimuwuwizarisatin.pdf
    • https://cdn.shopify.com/s/files/1/0429/6274/7545/files/33457193102.pdf
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/14104547884.pdf
    • https://cdn.shopify.com/s/files/1/0434/3886/6593/files/vuwenegoku.pdf
    • https://cdn.shopify.com/s/files/1/0432/4406/0839/files/application_of_genetic_engineering_in_health.pdf
    • https://cdn.shopify.com/s/files/1/0440/4353/4486/files/defects_in_metal_forming_process.pdf
    • https://cdn.shopify.com/s/files/1/0432/3727/7855/files/ravojawotibovi.pdf
    • https://cdn.shopify.com/s/files/1/0428/1863/3894/files/12098213052.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/benubojebexoreloruva.pdf
    • https://cdn.shopify.com/s/files/1/0435/9467/8435/files/kerala_onam_bumper_2020_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/5959/3894/files/comment_fusionner_2_fichiers_sur_mac.pdf
    • https://cdn.shopify.com/s/files/1/0429/4190/7100/files/free_jazz_trumpet_sheet_music.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006205.bin
3e20b63a74f6f4e0f15ec6d33a0ceac63cadf806fd5ba8f5eac040c6796ada19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6205 3488 bytes
font_01_sfnt_off00006e5c.bin
055c17ef31b6f5a64ac236afa831e514fc661766cbf45b2f18f344222a4bef69		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E5C 5232 bytes
font_02_sfnt_off00008035.bin
620181032b395c3c4a981cd30a9623e9802262a2130c6d710c9fb34660d53bab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8035 10276 bytes
font_03_sfnt_off0000a357.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA357 4324 bytes

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