Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7f57a2a9353d663…

MALICIOUS

PDF

57.8 KB Created: 2020-08-30 13:40:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a3cc044cfd801067beaad8ca1c7903f7 SHA-1: b01d15c4125df6622541ebedf12ca53d5fb028ed SHA-256: f7f57a2a9353d663eda2fa7d85fe4c1f6ae472391111b7ae17e66f0eaaf243a0
150 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, a technique often used in SEO poisoning or to obscure malicious redirects. One of the primary URLs, 'https://ttraff.com/wix?keyword=viking+conquest+the+last+tuatha+de+d', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, reinforcing its role in the attack. The presence of a large link farm and a malicious redirector strongly suggests an attempt to lure users to harmful content.

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.com/wix?keyword=viking+conquest+the+last+tuatha+de+d
    • https://static.usrfiles.com/ugd/b8c837_d9c380340e674d38b7994a786f2529dd.pdf
    • https://static.usrfiles.com/ugd/2b25b5_04f73f6ce7b2435faab43dc436ca7032.pdf
    • https://static.usrfiles.com/ugd/b8c837_4dc0cfc814ab4fb38b66e5784fbee6c3.pdf
    • https://static.usrfiles.com/ugd/79cb75_191430c63b5f43a0b31f75d4fa3c7cf0.pdf
    • https://static.usrfiles.com/ugd/b8c837_84e9cb0a2e9c485fb7883d8ff08fdfe1.pdf
    • https://static.usrfiles.com/ugd/b8c837_439bb322d2284741ae73232b0a5f10b2.pdf
    • https://static.usrfiles.com/ugd/cc14e4_f2b93580c4674188abebcf44ae700d01.pdf
    • https://static.usrfiles.com/ugd/575363_92514822d3ab482b941325f2a36ea097.pdf
    • https://cdn.shopify.com/s/files/1/0431/4795/2294/files/calvary_hillsong.pdf
    • https://cdn.shopify.com/s/files/1/0432/4530/6011/files/75546582370.pdf
    • https://cdn.shopify.com/s/files/1/0428/8249/8716/files/dnd_5e_guide_to_everything.pdf
    • https://cdn.shopify.com/s/files/1/0428/2168/1315/files/astrology_books_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/6038/0327/files/asus_firmware_restoration_utility.pdf
    • https://cdn.shopify.com/s/files/1/0440/7794/0886/files/19569520586.pdf
    • https://cdn.shopify.com/s/files/1/0439/6023/8238/files/islamic_flex_design_cdr_file_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/4916/4705/files/pibasuwikubepolukem.pdf
    • https://cdn.shopify.com/s/files/1/0437/9397/3405/files/nirokinivowoviditonu.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_off0000755f.bin
a36249cbca60b221740699cfd4389f40de8464cea7bc602931e17aabbc4cea1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x755F 5144 bytes
font_01_sfnt_off000086d0.bin
2e16bd26d33ce39631870927840ac402136c2a13d9003bf0a5c4b57e71e77259		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86D0 14704 bytes
font_02_sfnt_off0000b571.bin
c3243cd1eb0a44ec4ac3195c69e7d1508aa877accfd44d6f294832df90d07198		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB571 16416 bytes
font_03_sfnt_off0000cb2c.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCB2C 4324 bytes

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