Malicious PDF — malware analysis report

Static analysis result for SHA-256 f662a34207a26d60…

MALICIOUS

PDF

35.9 KB Created: 2020-09-06 02:17:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7472aac1827f6e45f3530936701c9d9c SHA-1: d855847a747608f2643f488eaef203691fa16e71 SHA-256: f662a34207a26d60cc5524619aca12019e1632f000100193538b7b56f782339b
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.me/wix?keyword=katy+perry+firework+sheet+music'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links to external PDFs hosted on 'static.usrfiles.com'. The document body, though heavily obfuscated, contains the same redirector URL, suggesting the primary intent is to drive user clicks to this malicious destination. No scripts were extracted from this sample.

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=katy+perry+firework+sheet+music
    • https://static.usrfiles.com/ugd/a51aec_21e2328a7219482284d3bc17c484d943.pdf
    • https://static.usrfiles.com/ugd/d9d1f5_39be41227db84641acde4388b0887621.pdf
    • https://static.usrfiles.com/ugd/225520_f06a105e620a4641b83e79d2eb0b71f8.pdf
    • https://static.usrfiles.com/ugd/4733ca_5be3dac645f748f8b53604c3c3c54548.pdf
    • https://static.usrfiles.com/ugd/c8d394_d5495187265a4e8a81e5e8c64bbbe36a.pdf
    • https://static.usrfiles.com/ugd/6cf804_fff8e42dd3694410a91993903e009840.pdf
    • https://static.usrfiles.com/ugd/221eaa_34d59e56a35f43e08fe49215c25ba869.pdf
    • https://static.usrfiles.com/ugd/834936_003d424d5a8841ccb75ec666f238f54e.pdf
    • https://static.usrfiles.com/ugd/d99ef3_a3702f509e2e4d1db931da2b3c3c5aac.pdf
    • https://cdn.shopify.com/s/files/1/0431/5725/8401/files/year_end_bonus_guidelines_2019_for_teachers.pdf
    • https://cdn.shopify.com/s/files/1/0434/4909/0200/files/sealed_portion_book_of_mormon.pdf
    • https://cdn.shopify.com/s/files/1/0460/7885/3284/files/19746732572.pdf
    • https://cdn.shopify.com/s/files/1/0463/3935/8882/files/numibatiwagonudijinomisaz.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004e75.bin
c98ce344877386f219d3d79675ffe6b283f2e230847d8b5102fbb9992cb9f286		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E75 5448 bytes
font_01_sfnt_off000060f4.bin
3634a12c3847283c32812e861f47227359a69dcb144f733a0f88e0b9f500cdeb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60F4 9940 bytes

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