Malicious PDF — malware analysis report

Static analysis result for SHA-256 348be9cac022a80d…

MALICIOUS

PDF

110.9 KB Created: 2020-08-18 15:05:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46f421ac3bd61c625b18faedc995e2c9 SHA-1: e8ca4a1623b9fefd8cd496684ad64f959c38ccc3 SHA-256: 348be9cac022a80de01030a3ea35d652e9ac4e6100d144721443e574c5e9bb07
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=esp32+datasheet+pinout'. Additionally, it exhibits a PDF SEO link farm behavior, with numerous links to PDFs hosted on Shopify, including 'https://cdn.shopify.com/s/files/1/0433/0710/6462/files/finilodonarota.pdf'. This suggests a social engineering attack aiming to redirect users to malicious content under the guise of providing a datasheet.

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=esp32+datasheet+pinout
    • http://files.tallerhort.com/uploads/1/3/2/7/132741241/vojubilezirukoxa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0710/6462/files/finilodonarota.pdf
    • https://cdn.shopify.com/s/files/1/0433/9679/2471/files/senujudemuxulesi.pdf
    • https://cdn.shopify.com/s/files/1/0440/8249/5640/files/abramelin_rituel.pdf
    • https://cdn.shopify.com/s/files/1/0431/4628/1120/files/70915132798.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/environmental_biology_book_download.pdf
    • https://cdn.shopify.com/s/files/1/0441/3086/1208/files/southwest_check-_in.pdf
    • https://cdn.shopify.com/s/files/1/0433/4957/3784/files/34689188063.pdf
    • https://cdn.shopify.com/s/files/1/0435/3658/0759/files/non_biodegradable_waste_management.pdf
    • https://cdn.shopify.com/s/files/1/0437/7932/6110/files/48160855259.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 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000127af.bin
629123bfde0685c5f69bbdd27ec008bde0224d5c30af1dabb990f6ee33ea778e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x127AF 6440 bytes
font_01_sfnt_off00013772.bin
550ba976d71f6875ca9ad5b01c37ef682f7244c170ae4d60dfafe1764c00382a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13772 5716 bytes
font_02_sfnt_off00014b14.bin
887f57f795f0008986714a4b85825ae8bd95b83505d23fee281f8c56b3c6808a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14B14 5172 bytes
font_03_sfnt_off00015ca3.bin
1ce82168107d60213fa925b148b13caedd988adea10672679d267a83ada1eb00		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15CA3 3300 bytes
font_04_sfnt_off000169df.bin
3b187dd5fbeab705c9c6098171b9e895c92d0d42aa46937c65d9a5f95b661b58		 pdf-font-stream PDF embedded font (sfnt) at offset 0x169DF 14164 bytes
font_05_sfnt_off00019784.bin
9dcce62ac3e4218504f3c770fef30a6d59198e84c9490386a1d113740f16aee3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19784 16308 bytes

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