Malicious PDF — malware analysis report

Static analysis result for SHA-256 b20e5dddd2ae54af…

MALICIOUS

PDF

71.5 KB Created: 2020-08-20 18:23:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d46008e3bbbc01deeea5e6f21bf5595 SHA-1: 23d025ffacfab478251d3a842d8a68deda5ec223 SHA-256: b20e5dddd2ae54afbaca73067288f92edcc7e456f4cd138f0b1f74514731cf1f
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains, but one critical link redirects to a known malicious domain. The document body, though heavily obfuscated, contains text related to 'Windows 10 bootable usb rufus' and the malicious URL. This suggests a phishing or scam attempt to redirect users to malicious content.

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=windows+10+bootable+usb+rufus
    • http://zevaze.madelinemullenbach.com/uploads/1/3/2/8/132815196/datijejabewe.pdf
    • http://files.heartandvineapothecary.com/uploads/1/3/2/6/132682655/3ba6b7ae.pdf
    • http://files.ktoart.com/uploads/1/3/1/3/131379877/befixigaxinuwiv_rulazejiraxipo_xifolexorirep.pdf
    • http://files.democracyalert.ca/uploads/1/3/1/6/131606605/bigilugodateb_tuzaniferawise.pdf
    • https://cdn.shopify.com/s/files/1/0431/7052/9436/files/50800846180.pdf
    • https://cdn.shopify.com/s/files/1/0430/6472/1562/files/vexufolup.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gijamibumiji.pdf
    • https://cdn.shopify.com/s/files/1/0433/0097/8853/files/77880270929.pdf
    • https://cdn.shopify.com/s/files/1/0429/5999/5033/files/ambiente_laboral_saludable.pdf
    • https://cdn.shopify.com/s/files/1/0431/6954/6395/files/92865541317.pdf
    • https://cdn.shopify.com/s/files/1/0436/9691/4586/files/15814613613.pdf
    • https://cdn.shopify.com/s/files/1/0435/5588/1119/files/xazufe.pdf
    • https://cdn.shopify.com/s/files/1/0431/0731/9974/files/13351825716.pdf
    • https://cdn.shopify.com/s/files/1/0429/0176/6310/files/the_secret_history_of_science_fiction.pdf
    • https://cdn.shopify.com/s/files/1/0429/8221/1733/files/babylonian_numbers_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0430/3139/6501/files/faximep.pdf
    • https://cdn.shopify.com/s/files/1/0432/7384/6952/files/36686079667.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 8

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e79.bin
109b38820190954f8e1866972501878e3c1c3109da96121909b170ea20c0127b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E79 6032 bytes
font_01_sfnt_off00008358.bin
85647d81d54a18409a5e4106efb78c149fb30512279f8de6f22795031041728b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8358 5340 bytes
font_02_sfnt_off000095a2.bin
b7882c459d94d9fb05ee491b72d0ee9c35e8d4bc9ed5787c7a0b3ba78fd6bc86		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95A2 4140 bytes
font_03_sfnt_off0000a2bf.bin
0b38f6fd5e0b54bfa22d5adee1cfe00629fe134100fc7cfc1ad14a2ab7974207		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA2BF 6148 bytes
font_04_sfnt_off0000b29f.bin
affd33f31100d9a0c58c71f5da55fc497ac0ecde24e47e0e777c46968d8425bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB29F 11700 bytes
font_05_sfnt_off0000da84.bin
f097819e10ef0bf7279ccd2dde0c420fb0c78dfa1d1f99d8f76d9c40140f0e43		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDA84 18296 bytes
font_06_sfnt_off0000f793.bin
e68b24175d5971d76b4c28d2c0db5c95ec99c51429de742704ab5baffc55f2f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF793 2752 bytes
font_07_sfnt_off000102c7.bin
d404f64416bf1ff5ad76d6d0ab30c7620aa9735638cfece5436aad8d6ad80edc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x102C7 2608 bytes

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