Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce96f392d1cc8215…

MALICIOUS

PDF

45.2 KB Created: 2020-09-01 10:37:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b469ac93c3a72e18e955b6953b8fef5 SHA-1: a332546be411772241d3fbaf8e1d1c5ba55c074a SHA-256: ce96f392d1cc82158f1a275b8be00706003565945520c614b16ce44304e2f0d1
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a link to a known malicious redirector, ttraff.com, which is likely intended to lead the user to a malicious site. The document body, though heavily obfuscated, contains text related to 'exacerbate verb form' and references to wkhtmltopdf, suggesting a lure. The PDF also contains a large number of embedded links to Shopify, likely part of a link farm to improve SEO for 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/wix?keyword=exacerbate+verb+form
    • https://cdn.shopify.com/s/files/1/0430/9155/8551/files/leber.pdf
    • https://cdn.shopify.com/s/files/1/0431/6895/6578/files/nasejibegor.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/11147191401.pdf
    • https://cdn.shopify.com/s/files/1/0432/1034/2563/files/basic_russian_language.pdf
    • https://cdn.shopify.com/s/files/1/0430/5597/2501/files/blessed_be_the_lord_god_almighty_chords.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2132/files/70867728758.pdf
    • https://cdn.shopify.com/s/files/1/0436/3668/7008/files/79795185203.pdf
    • https://cdn.shopify.com/s/files/1/0432/3858/8584/files/54328803777.pdf
    • https://cdn.shopify.com/s/files/1/0431/1315/2673/files/wifawikiwazawepuxez.pdf
    • https://cdn.shopify.com/s/files/1/0460/5752/1307/files/5e_college_of_satire.pdf
    • https://static.usrfiles.com/ugd/921909_0c944cd146544af0a102a77de045b0df.pdf
    • https://static.usrfiles.com/ugd/eb6612_3a6eec090d4245ff98bf7ffa8043a136.pdf
    • https://static.usrfiles.com/ugd/09273f_10086c9314c54d91b512138197dcbf3b.pdf
    • https://static.usrfiles.com/ugd/0dd040_d950905a84474b71b3db42507e5a77d6.pdf
    • https://static.usrfiles.com/ugd/b8c837_6040b59e78994197999565aa9c536a0d.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_off00005b4e.bin
e890bbee6da41183a49a22c0324c1fbec25c1debb8a9464d91e292e0d9c2cc3b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B4E 5044 bytes
font_01_sfnt_off00006c77.bin
f4d0c5483b98f910482561575fd107ed8c57ff746dbce907327d0418401e6804		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C77 11592 bytes
font_02_sfnt_off00009379.bin
73f6f760a67782f27700c3ed047511a210a1e3765a9cc4fd416c63ff6a2522af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9379 16060 bytes

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