Malicious PDF — malware analysis report

Static analysis result for SHA-256 aabff309448efc63…

MALICIOUS

PDF

58.0 KB Created: 2020-08-31 23:14:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 79be0f4a1ca90d8cbb86d4fa214d3117 SHA-1: 37d1c3c6c1f52d7c7d574335f977444f6d5df541 SHA-256: aabff309448efc63ce013195ecbd208b5417af1971fe83f2285cbc084d86e681
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 'https://ttraff.me/wix?keyword=reformas+borbonicas+militares+resumen'. This indicates the document's primary purpose is to lure the user to a malicious site. Another critical heuristic indicates a PDF link farm, suggesting a broad distribution attempt. The document body, though heavily obfuscated, contains the same malicious URL.

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.me/wix?keyword=reformas+borbonicas+militares+resumen
    • https://cdn.shopify.com/s/files/1/0434/6583/4649/files/minecraft_ps3_downloads.pdf
    • https://cdn.shopify.com/s/files/1/0434/2526/7877/files/51424477766.pdf
    • https://cdn.shopify.com/s/files/1/0433/4072/6431/files/45939298355.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/26965864763.pdf
    • https://cdn.shopify.com/s/files/1/0445/5170/0644/files/21060879735.pdf
    • https://static.usrfiles.com/ugd/136d07_bb6870975e894abb8f5e6e6fbf589490.pdf
    • https://static.usrfiles.com/ugd/1c8c6c_9f408efb97df4e938e3f5b591473200d.pdf
    • https://cdn.shopify.com/s/files/1/0433/4786/9850/files/62212639256.pdf
    • https://cdn.shopify.com/s/files/1/0434/0331/3308/files/shigella_biochemical_tests.pdf
    • https://cdn.shopify.com/s/files/1/0431/8098/2432/files/35923320225.pdf
    • https://static.usrfiles.com/ugd/0c8cc8_ee2dcc883cb84431aa3221cbcc85b490.pdf
    • https://static.usrfiles.com/ugd/906e9f_2b552069b86d4b8f91ec476981beab50.pdf
    • https://static.usrfiles.com/ugd/d5415a_6a8ebfd9f7914133aac7da8809196f9c.pdf
    • https://static.usrfiles.com/ugd/b8c837_dcc87629cb534cf2b9ec74ea4d011f03.pdf
    • https://static.usrfiles.com/ugd/26481d_71a58ac1610449d8aa8200a81f942e5f.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_off00009865.bin
db6b649ade09b6497f2518a18ca6e278a6e0e2f535c97d49cd1bc8604fa053ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9865 5056 bytes
font_01_sfnt_off0000a97e.bin
8ffc17f003787efdb5f5df1fdc449d7e59c305c91cb2ebcf7e45511bec96be79		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA97E 10388 bytes
font_02_sfnt_off0000cca0.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCCA0 4324 bytes

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