Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0ece81fe37812b9…

MALICIOUS

PDF

39.5 KB Created: 2020-08-18 19:38:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90a69c15b489e408b4c4d65f66ca0aac SHA-1: 3a23376971916fc76ae4c1526a63f8014f425bc8 SHA-256: c0ece81fe37812b92161000c40a2de16cad11dbedf5011513722ad1e5dfa8883
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs, many of which point to a link farm hosted on cdn.shopify.com. One of the primary URLs, ttraff.ru, is identified as a malicious redirector. This suggests the document is designed to lure users into clicking links that ultimately lead to malicious content or further compromise. The document body itself contains garbled text and embedded URLs, reinforcing the link farm and redirection attack pattern.

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=sistema+monofasico+bifasico+y+trifasico+pdf
    • http://files.filmandartacademy.com/uploads/1/3/1/1/131163617/dasalojugedutabu.pdf
    • https://cdn.shopify.com/s/files/1/0437/2021/2635/files/45784532302.pdf
    • https://cdn.shopify.com/s/files/1/0430/8199/0304/files/bofevoroxosavujil.pdf
    • https://cdn.shopify.com/s/files/1/0435/9893/8274/files/oxidation_reaction_of_alcohols.pdf
    • https://cdn.shopify.com/s/files/1/0433/7795/0870/files/8577355166.pdf
    • https://cdn.shopify.com/s/files/1/0430/9506/4733/files/kuzawed.pdf
    • https://cdn.shopify.com/s/files/1/0433/0727/0297/files/familia_boletaceae.pdf
    • https://cdn.shopify.com/s/files/1/0429/0809/0535/files/sojixoxepasotuxokaxugipe.pdf
    • https://cdn.shopify.com/s/files/1/0429/9092/8026/files/rudevanenegobukojinuv.pdf
    • https://cdn.shopify.com/s/files/1/0437/6831/6055/files/byzantine_art_history.pdf
    • https://cdn.shopify.com/s/files/1/0435/2642/2696/files/19th_century_song_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/3446/0828/files/durifiziwugizugutuse.pdf
    • https://cdn.shopify.com/s/files/1/0431/7901/6360/files/eider_jacket_size_guide.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_off00005813.bin
1c6d50b41140f47a5fc3550be05242c29cb8633ca0701189a8d7afc646fc6553		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5813 5616 bytes
font_01_sfnt_off00006b08.bin
ead55162248a9438b8f836d7184dab6cc9970ea6734917139d5e72cf57466279		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B08 11244 bytes

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