Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ade98dee31f2e22…

MALICIOUS

PDF

42.1 KB Created: 2020-08-04 13:27:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 843c3178cbb314a600acf51d8cc4cf6f SHA-1: 68c33765e8df0cd8e4be8f8f7023dac2550d9f85 SHA-256: 8ade98dee31f2e22d7ea55c83f5cec73e1f8c53cc3497a90d57e936dbcf13f22
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector at 'ttraff.com'. This URL is part of a link farm designed to distribute malicious content, likely leading to further compromise. The document body, though heavily obfuscated, contains text related to book downloads, suggesting a social engineering lure.

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/pify?keyword=isabel+allende+libros+gratis+pdf
    • http://files.alaskaaircarriers.org/uploads/1/3/1/3/131397946/doxodexozid_xezabe_kovepis_sezibeliv.pdf
    • http://rowimivi.thesportscourtblog.com/uploads/1/3/0/7/130775868/ab53ccbb862f.pdf
    • http://files.chagcreations.com/uploads/1/3/2/3/132302710/lobuxe.pdf
    • http://files.shopteambros.com/uploads/1/3/1/3/131398406/finorim_tojorawax_jasud.pdf
    • http://files.grennifer.com/uploads/1/3/1/4/131482976/9969814.pdf
    • https://cdn.shopify.com/s/files/1/0433/4796/8149/files/98898957591.pdf
    • https://cdn.shopify.com/s/files/1/0435/9543/2099/files/cops_theme_song_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0427/4978/8327/files/9480473972.pdf
    • https://cdn.shopify.com/s/files/1/0435/5037/6100/files/42148451612.pdf
    • https://cdn.shopify.com/s/files/1/0428/7486/3772/files/80898684145.pdf
    • https://cdn.shopify.com/s/files/1/0431/2776/7206/files/zujapujaxizofatavasugov.pdf
    • https://cdn.shopify.com/s/files/1/0428/7882/8700/files/santa_baby_madonna.pdf
    • https://cdn.shopify.com/s/files/1/0434/6671/9385/files/29004822330.pdf
    • https://cdn.shopify.com/s/files/1/0428/6559/0438/files/fasilujimufazisub.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xekugoxozeritazol.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_off00006220.bin
917b1d16c27eb9c09b127674e1e20c03c4b943b9665e33bfcf8a867ca3070196		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6220 5284 bytes
font_01_sfnt_off0000741d.bin
ce3c5e13bbdba287e2f1f1b822832834362fda94726e622a38a7c40ed2375e0e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x741D 11636 bytes

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