Malicious PDF — malware analysis report

Static analysis result for SHA-256 77d2d7388c0c4e06…

MALICIOUS

PDF

35.2 KB Created: 2020-08-04 03:51:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 717442d886e20de475ee61fca90648b7 SHA-1: 406e4cbd24af63b3eec735babaab6088c921e8bd SHA-256: 77d2d7388c0c4e065ee23b83852ac3dfb2f528ae9eaff12a48008d8c10d7a5fa
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=balance+ton+quoi+partition+piano+pdf'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many hosted on Shopify. The document body, though heavily garbled, contains the same suspicious URL, suggesting an attempt to trick users into clicking it. The primary intent appears to be directing 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=balance+ton+quoi+partition+piano+pdf
    • http://files.stuttgartgomath.com/uploads/1/3/2/6/132681827/3e51d35b.pdf
    • http://files.dogwoodstudiosnc.com/uploads/1/3/0/8/130814907/1ed36b1100ac.pdf
    • http://tudobas.artscollective.co.nz/uploads/1/3/0/7/130738615/7962e6c20084c.pdf
    • https://cdn.shopify.com/s/files/1/0432/3000/3358/files/28952473163.pdf
    • https://cdn.shopify.com/s/files/1/0429/7523/2153/files/ruwedisoxitiw.pdf
    • https://cdn.shopify.com/s/files/1/0429/5639/0559/files/health_economics_charles_phelps.pdf
    • https://cdn.shopify.com/s/files/1/0431/7259/3832/files/dapipunonajebedamoxe.pdf
    • https://cdn.shopify.com/s/files/1/0431/1652/7770/files/81411379734.pdf
    • https://cdn.shopify.com/s/files/1/0434/4053/7750/files/reverse_linked_list_java.pdf
    • https://cdn.shopify.com/s/files/1/0430/0177/4233/files/mukizikuxoxafoget.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/93867881616.pdf
    • https://cdn.shopify.com/s/files/1/0435/9749/6483/files/jazotajokik.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_off00004002.bin
628ac2fb2d389e0ed6394a3e328f82497bd7b2fed35ae98dfcbc458fbb0ef624		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4002 5028 bytes
font_01_sfnt_off0000511b.bin
4332facf8067873312d27864082cee220878cfa8c8f3e3f02e6333de1816b5b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x511B 9676 bytes
font_02_sfnt_off000071ef.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71EF 4324 bytes

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