Malicious PDF — malware analysis report

Static analysis result for SHA-256 d793c9a9abc30149…

MALICIOUS

PDF

43.8 KB Created: 2020-08-12 05:44:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ba81231e1ba796f0bd4143dc6b866815 SHA-1: d054c00e4bfbd7ac08b42498bcb88a058fa62a92 SHA-256: d793c9a9abc30149f8a9d4b661e49fd1d254ed179ed0574072812768617e1cb9
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a link that redirects to a known malicious infrastructure, masquerading as a 'Canara bank car loan application form'. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The primary malicious URL identified is https://ttraff.ru/pify?keyword=canara+bank+car+loan+application+form+pdf, which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains the same lure text and the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=canara+bank+car+loan+application+form+pdf
    • http://files.dynamicfreightcarriers.com/uploads/1/3/0/7/130739456/e4ad315ea3d471b.pdf
    • http://zivuma.peterqb.com/uploads/1/3/0/7/130775734/22db481c5.pdf
    • http://files.sealionart.com/uploads/1/3/0/7/130739712/febojipeturajasuwuku.pdf
    • https://cdn.shopify.com/s/files/1/0430/3316/5986/files/berepa.pdf
    • https://cdn.shopify.com/s/files/1/0432/5385/8472/files/35357804934.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84574839703.pdf
    • https://cdn.shopify.com/s/files/1/0428/7243/8951/files/waratumitip.pdf
    • https://cdn.shopify.com/s/files/1/0431/2141/0210/files/tisidovepajitunexabo.pdf
    • https://cdn.shopify.com/s/files/1/0437/0484/4442/files/check_if_string_contains_substring.pdf
    • https://cdn.shopify.com/s/files/1/0429/8588/1753/files/2930246317.pdf
    • https://cdn.shopify.com/s/files/1/0433/2929/0390/files/69567169839.pdf
    • https://cdn.shopify.com/s/files/1/0430/6989/8914/files/58870974313.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81108552740.pdf
    • https://cdn.shopify.com/s/files/1/0432/0958/8897/files/kulibeburemevafemiz.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_off00006e49.bin
c9f2fbbaef492c2da666200b700bec17610b178325bc1aaa39ee3680c31f05c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E49 5232 bytes
font_01_sfnt_off00007ff9.bin
1963f3065346e6f62ac0f15012f4246046f9a18b2c2d1d2dd218c99573f77964		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FF9 10028 bytes

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