Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad8c4cf74ea34ec5…

MALICIOUS

PDF

52.8 KB Created: 2020-07-31 01:06:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52d8c6d067f05f89e7a720ab5eb25145 SHA-1: d0b2c3606ab2072dc9472594a21b22e52fcc07eb SHA-256: ad8c4cf74ea34ec5ab6162b27735c3e91398c7341150dead1af8ea53f5155542
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 links, identified as a PDF link farm. One of these links, 'https://ttraff.ru/pify?keyword=que+es+atomismo+pdf', points to a known malicious redirector. The document body appears to be malformed or obfuscated, but the primary malicious activity is the redirection to malicious sites.

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=que+es+atomismo+pdf
    • http://files.cpmyc.org/uploads/1/3/1/6/131606003/fb2d4772ed9.pdf
    • http://files.matteozamariaphotography.com/uploads/1/3/1/3/131382395/0a6b38.pdf
    • http://files.yourhomey.com/uploads/1/3/1/0/131070362/3ff747d990799ad.pdf
    • http://files.unitedcybl.org/uploads/1/3/0/9/130969985/436327.pdf
    • https://cdn.shopify.com/s/files/1/0431/0636/9697/files/togoxanikewunizibukos.pdf
    • https://cdn.shopify.com/s/files/1/0433/2060/6885/files/2406900016.pdf
    • https://cdn.shopify.com/s/files/1/0432/0342/8510/files/46103221494.pdf
    • https://cdn.shopify.com/s/files/1/0430/3749/1354/files/92831620644.pdf
    • https://cdn.shopify.com/s/files/1/0428/9419/6902/files/2487051359.pdf
    • https://cdn.shopify.com/s/files/1/0438/4971/1781/files/91043224276.pdf
    • https://cdn.shopify.com/s/files/1/0431/3497/6157/files/32259409111.pdf
    • https://cdn.shopify.com/s/files/1/0435/6312/2843/files/61918776706.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/12909571685.pdf
    • https://cdn.shopify.com/s/files/1/0434/5197/3794/files/50843919629.pdf
    • https://cdn.shopify.com/s/files/1/0437/1123/4197/files/31297389313.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/
    • https://cdn.shopify.com/s/files/1/0428/941

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000075e8.bin
158da2260a7a401caf1206567e3b3223bb172f8c55074ceddebf61a34b55f71c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75E8 4896 bytes
font_01_sfnt_off0000869f.bin
e13e822446c8992e0b86f15439c74d9d38e26c1b52a45138cacabce72f47ff6d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x869F 12696 bytes
font_02_sfnt_off0000af37.bin
909e1284cb5cf330e420864cb10833f98e2764078d03bc4f2432c8e182b13f15		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAF37 16200 bytes

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