Malicious PDF — malware analysis report

Static analysis result for SHA-256 f78280f055e651b4…

MALICIOUS

PDF

43.1 KB Created: 2020-08-14 23:12:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6656fe244595aef7108b6c2795fc3e23 SHA-1: e38367bd8a188a23259f246cf5412e9f36b68114 SHA-256: f78280f055e651b4896f6579067c2226afb09c27bf4b9f13e3a37b73ba99e922
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.cc/pify?keyword=uniform+cost+search+java+code'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, including one to 'https://cdn.shopify.com/s/files/1/0432/2790/6206/files/vatinejorap.pdf'. The document body, though heavily obfuscated, contains these URLs, suggesting the document's primary purpose is to direct users to malicious or deceptive content via these links.

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.cc/pify?keyword=uniform+cost+search+java+code
    • http://files.grapevinehairsalon.com/uploads/1/3/1/4/131483421/1f11b617260c.pdf
    • http://files.bonniewudesign.com/uploads/1/3/2/7/132712251/6210600.pdf
    • http://files.charmsandsparklebyria.com/uploads/1/3/0/7/130775402/nulis.pdf
    • http://files.cozy-trips.com/uploads/1/3/1/4/131438046/natujapuzurefo_sukogerag.pdf
    • https://cdn.shopify.com/s/files/1/0432/2790/6206/files/vatinejorap.pdf
    • https://cdn.shopify.com/s/files/1/0427/7056/3239/files/99882935758.pdf
    • https://cdn.shopify.com/s/files/1/0433/7709/8913/files/what_is_a._gitconfig_file.pdf
    • https://cdn.shopify.com/s/files/1/0429/6497/5765/files/60141295512.pdf
    • https://cdn.shopify.com/s/files/1/0431/5562/0006/files/chrome_os_for_desktop_pc.pdf
    • https://cdn.shopify.com/s/files/1/0433/6189/4565/files/80305587833.pdf
    • https://cdn.shopify.com/s/files/1/0433/3443/4969/files/jodamipexubudi.pdf
    • https://cdn.shopify.com/s/files/1/0430/7753/3856/files/bubisedaranidobe.pdf
    • https://cdn.shopify.com/s/files/1/0427/8134/3900/files/80174703375.pdf
    • https://cdn.shopify.com/s/files/1/0428/8030/3270/files/tisadozux.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_off00005fce.bin
6a529361fe526b3ea0ca910043543d2873911847d4be1879eb1bc51cdede4156		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FCE 5356 bytes
font_01_sfnt_off000071db.bin
d7c153f1945587b4ed0a541e8b8490e138f052772b4719a4b089ee3db1bcecb4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71DB 14652 bytes

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