Malicious PDF — malware analysis report

Static analysis result for SHA-256 499a9ed08a2208bb…

MALICIOUS

PDF

42.9 KB Created: 2020-08-17 11:14:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44a70963e74eb87c05d809e6e220318d SHA-1: adc8a4b259fd2470454395d3920f049f0d2c1ac3 SHA-256: 499a9ed08a2208bb8e31c98d89580ccd8f413feb455be23cf531ffd5dac2bdcf
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=devexpress+spreadsheet+mvc+example'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, including one to 'http://fudexoxom.4marinhomes.com/uploads/1/3/1/4/131453028/89ae00ace98fc18.pdf'. The document body, though heavily obfuscated, contains the same redirector URL, suggesting the primary intent is to direct users to malicious infrastructure.

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=devexpress+spreadsheet+mvc+example
    • http://fudexoxom.4marinhomes.com/uploads/1/3/1/4/131453028/89ae00ace98fc18.pdf
    • https://cdn.shopify.com/s/files/1/0438/7389/4555/files/toshiba_boot_from_usb.pdf
    • https://cdn.shopify.com/s/files/1/0438/2975/6066/files/febasapifegejugo.pdf
    • https://cdn.shopify.com/s/files/1/0435/9212/2536/files/96720779337.pdf
    • https://cdn.shopify.com/s/files/1/0429/2290/1663/files/split_to_single_jpg.pdf
    • https://cdn.shopify.com/s/files/1/0431/7547/7405/files/39519507618.pdf
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/asus_rt-_n66u.pdf
    • https://cdn.shopify.com/s/files/1/0430/9109/9805/files/ba_1st_year_marathi_book_download.pdf
    • https://cdn.shopify.com/s/files/1/0439/6980/6494/files/lepidopteros_nocturnos.pdf
    • https://cdn.shopify.com/s/files/1/0432/6372/1637/files/tedukiwebum.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_off00005d20.bin
07c6b2c2533487c09f86546887e5939375acfadb56473c9a7464814390ce027d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D20 4964 bytes
font_01_sfnt_off00006e0b.bin
b374004da82b0b33bc9cd8b9f537e8906a25cfc1c2893a3edd2a6d0f40ab7b29		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E0B 10220 bytes
font_02_sfnt_off00009124.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9124 4324 bytes

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