Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad429714f998f97c…

MALICIOUS

PDF

34.0 KB Created: 2020-09-17 02:59:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0055b10e1ee6df9adec4606cfeb19472 SHA-1: 59fdf367fb046ff27ba61d039d4716ac8538106b SHA-256: ad429714f998f97cc75d85cb530239b215b8223d69ebc70807784dd7c160c477
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a mass external link farm, with a primary URL pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the same redirector URL and several other PDF links hosted on Shopify and other domains. This suggests the document's purpose is to lure users into clicking malicious links, likely leading to further compromise.

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.me/pify?keyword=vocab+unit+4+level+e+answers
    • http://gozekat.lcoproductions.net/uploads/1/3/2/7/132712207/6880902.pdf
    • http://kesafeva.volleyballintheq.com/uploads/1/3/0/7/130776447/03862f1ff39.pdf
    • http://sofoweno.gerardo-jimenez.com/uploads/1/3/1/3/131379833/bajumusul.pdf
    • http://files.wandapayne.com/uploads/1/3/0/7/130739567/e9f4b5f19c4877c.pdf
    • http://files.itsmydayspecialevents.net/uploads/1/3/1/4/131437318/3296374.pdf
    • http://files.seizediem.com/uploads/1/3/1/4/131438741/vewim_gifesimefipotu.pdf
    • http://vekole.portlandcoyote.com/uploads/1/3/1/3/131379326/porape-famuvaganuluso-vajema.pdf
    • http://jivesu.allamericandt1.com/uploads/1/3/1/1/131163599/wikuki_befaziwo_kemuwasos.pdf
    • https://cdn.shopify.com/s/files/1/0428/6621/3031/files/30817135319.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57727452667.pdf
    • https://cdn.shopify.com/s/files/1/0433/7028/3173/files/trauma_nurse_core_course_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/5525/9546/files/59375334692.pdf
    • https://cdn.shopify.com/s/files/1/0432/8236/6629/files/27667675891.pdf
    • https://cdn.shopify.com/s/files/1/0438/3830/8512/files/calculus_book_for_jee.pdf
    • https://cdn.shopify.com/s/files/1/0428/3056/1436/files/tumivojowiluwo.pdf
    • https://cdn.shopify.com/s/files/1/0428/1332/5471/files/37441470855.pdf
    • https://cdn.shopify.com/s/files/1/0435/4742/6965/files/5047998571.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_off00004a6b.bin
0006e2add4ab3c231a3c99a50c1e0f9cdd53f292bc55e140a56d89618a37f950		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A6B 5136 bytes
font_01_sfnt_off00005c11.bin
3c65ca0f1e212c893860b88f7fe4a0392b8e627e5a9ec169d50cab3e72b4b39d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C11 9072 bytes

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