Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa6d41d52e8e0d24…

MALICIOUS

PDF

52.1 KB Created: 2020-07-31 13:05:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4566d3f92367bccca2f36b6aa59ee536 SHA-1: 51f72ab14fb8ce21ab0f5cb3a55ad02a6722168b SHA-256: aa6d41d52e8e0d24a5d696abc8652e4e37f36bf6c2efed6255f53081b39c2915
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a link to a known malicious redirector. The document body, though heavily obfuscated, suggests a lure related to mathematical concepts to entice users to click on these links. The primary malicious URL identified is ttraff.com, which likely serves as a gateway to further 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=angle+between+two+lines+pdf
    • http://files.magdaslens.com/uploads/1/3/1/4/131438869/vopoxajalef_jepegidepo_gemotopilabax_rutelawe.pdf
    • http://files.youthfoodsovereignty.com/uploads/1/3/1/3/131380723/lemejuji_xilevokud_babolisiv.pdf
    • http://files.thepeacefulpup.com/uploads/1/3/0/8/130813796/gugojewuzaxizan.pdf
    • http://files.trueelegancetransportation.com/uploads/1/3/0/7/130775558/baruneforodi.pdf
    • http://files.visionglobalcapital.org/uploads/1/3/1/3/131380892/7813692.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/baxumedufimoval.pdf
    • https://cdn.shopify.com/s/files/1/0429/4865/7318/files/21481139829.pdf
    • https://cdn.shopify.com/s/files/1/0431/0761/4882/files/waxepabog.pdf
    • https://cdn.shopify.com/s/files/1/0435/0948/1624/files/ribuxegizoruf.pdf
    • https://cdn.shopify.com/s/files/1/0431/1633/1172/files/funenorobasapitasinetani.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/40429789840.pdf
    • https://cdn.shopify.com/s/files/1/0436/7423/9129/files/12767610973.pdf
    • https://cdn.shopify.com/s/files/1/0431/6200/9760/files/vokumetejofa.pdf
    • https://cdn.shopify.com/s/files/1/0432/5353/0788/files/toporakajitok.pdf
    • https://cdn.shopify.com/s/files/1/0433/0297/7700/files/61160025386.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/76222514852.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_off000072c5.bin
1323b61b682626484287e1c84fe9d6c5324ad1b50ed4fcd3a5ac9ee0038259e0
pdf-font-stream PDF embedded font (sfnt) at offset 0x72C5 4912 bytes
font_01_sfnt_off00008395.bin
61620e4bb68c4e774265452d49f432dda0b6744f577e8cff0c714e0b76ff9132
pdf-font-stream PDF embedded font (sfnt) at offset 0x8395 13240 bytes
font_02_sfnt_off0000ae2f.bin
24c5c481937acf4f4841e6563a6d7a18cfdb810806c94b09ac0ff4033348c1e6
pdf-font-stream PDF embedded font (sfnt) at offset 0xAE2F 16072 bytes