Malicious PDF — malware analysis report

Static analysis result for SHA-256 3aeec4ffb662120f…

MALICIOUS

PDF

43.8 KB Created: 2020-09-02 17:30:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54cac24d76bdd08949922ee4a4a6be57 SHA-1: b82380eb8915f80764b62beecd69b68563f257ab SHA-256: 3aeec4ffb662120fae166e6f7eb44756111c3fcdeb39f0e3dc42a29b4e025b84
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.me/wix?keyword=ableton+metronome+sound'. The document body, though partially corrupted, contains text related to 'Ableton metronome sound' and the redirector URL, suggesting a lure. The file also contains a large number of embedded links to various PDF files hosted on Shopify and other domains, indicating a link farm strategy, likely for SEO poisoning or distributing malicious content. 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=ableton+metronome+sound
    • https://cdn.shopify.com/s/files/1/0431/4395/4594/files/brche_addieren_subtrahieren_aufgaben.pdf
    • https://cdn.shopify.com/s/files/1/0438/8297/1291/files/hurst_cardiology_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/6929/3215/files/logical_maths_questions_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/1816/6167/files/nimubowaxibejabixavawu.pdf
    • https://cdn.shopify.com/s/files/1/0433/4583/8232/files/sefek.pdf
    • https://static.usrfiles.com/ugd/41a0b6_e7bb395ca8f34e17a7f7737607220b93.pdf
    • https://static.usrfiles.com/ugd/b8c837_b5bd33ce2b044034aaaf29287af45e58.pdf
    • https://static.usrfiles.com/ugd/5b9a87_2c9a9f22535840928d77c2aad26c7b6b.pdf
    • https://static.usrfiles.com/ugd/dfb5f8_84dc0cfeda4749fe8aaa0affb717e1b7.pdf
    • https://cdn.shopify.com/s/files/1/0434/2693/9042/files/download_10.9_mavericks_link.pdf
    • https://cdn.shopify.com/s/files/1/0431/0745/1041/files/calculus_vol_2_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0434/2831/5293/files/sexovofemibugafukapa.pdf
    • https://cdn.shopify.com/s/files/1/0432/8387/3942/files/install_cuda_10._0.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_off00005935.bin
71c3cc121b1b8231b309359b197bb9df2d2c30dc75f2befdd15c6198ce497d83		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5935 4892 bytes
font_01_sfnt_off000069bb.bin
ea5cdaa0d0451c758ea7635c09e21e88a1e3b0ea9a8b7f39240d965ec56d6f45		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69BB 10192 bytes
font_02_sfnt_off00008cc9.bin
975089639afea594160f6daa1ae948ffc4125994d61a9fd32dce02580f7b6b15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CC9 16312 bytes

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