Malicious PDF — malware analysis report

Static analysis result for SHA-256 56b0bfc1c3719262…

MALICIOUS

PDF

129.4 KB Created: 2020-08-29 15:20:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5bb96a49304051f3efb1cef47ca41f94 SHA-1: 88f83592d0a270c2c2e7deb67401968ab33b2ece SHA-256: 56b0bfc1c3719262fbfebe6bdac51302da90efa837027558a5f51457a28cdf7c
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 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs. The document body, though partially garbled, contains the same malicious URL, suggesting it is the primary lure. The file is likely used to redirect users to a malicious site for further compromise.

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/wix?keyword=instalaciones+hidraulicas+y+sanitarias+en+edificios
    • https://cdn.shopify.com/s/files/1/0437/4721/3464/files/52799923588.pdf
    • https://cdn.shopify.com/s/files/1/0438/9208/0792/files/37677848886.pdf
    • https://cdn.shopify.com/s/files/1/0433/0392/7973/files/8330459622.pdf
    • https://cdn.shopify.com/s/files/1/0434/4266/7676/files/80007232897.pdf
    • https://cdn.shopify.com/s/files/1/0431/3281/3473/files/95163447266.pdf
    • https://static.usrfiles.com/ugd/b8c837_f0af29b190654f69b932159ae2de1a24.pdf
    • https://static.usrfiles.com/ugd/b8c837_574478db8c164d8684529770df75ca34.pdf
    • https://static.usrfiles.com/ugd/c7ef1a_61cb35916a1541d3b16f2c488f97e48c.pdf
    • https://static.usrfiles.com/ugd/b8c837_5a9305f6588b4474adc7c5e9845fe4ff.pdf
    • https://static.usrfiles.com/ugd/b8c837_6dec61e7e5da4d4fb8f6a35a122a5161.pdf
    • https://static.usrfiles.com/ugd/b8c837_6245bf216f30484d83cdd35d1fab4265.pdf
    • https://static.usrfiles.com/ugd/10b11f_6a635875375d4661998857523f792d61.pdf
    • https://static.usrfiles.com/ugd/097bd5_332639d30eb244348af29b3e1c59619c.pdf
    • https://static.usrfiles.com/ugd/b8c837_bd8e3d9ad5a3470aa862d8405275c42c.pdf
    • https://static.usrfiles.com/ugd/b8c837_9dab5f8518744f5480a8a1142c8bc6f9.pdf
    • https://static.usrfiles.com/ugd/b8c837_7b3a33a4800b4cea812f1c5700f60698.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00018e50.bin
b605397040ec59b1c00d3ddd11546a8d074e9c21a2c567d50c9118a73eb0e053		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18E50 5032 bytes
font_01_sfnt_off00019f50.bin
eacdf8122828a54966a3d3c855921ff0db3694cc7ce73c5a7ccd69395a4a611c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19F50 17300 bytes
font_02_sfnt_off0001d2ca.bin
9853a4a918762215dfcba51349555ff48d39e56332efe18e2f333ca30d8a5b61		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1D2CA 16096 bytes
font_03_sfnt_off0001e794.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1E794 4324 bytes

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