Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8e5da8df91f2d8f…

MALICIOUS

PDF

40.7 KB Created: 2020-08-22 17:25:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f82e7f2397edc3e1ae443f8966a2d4a SHA-1: f5706eaa9aac797e9b687c43d25a148ed89437f3 SHA-256: f8e5da8df91f2d8f46ae3265e5f6a184f6bae3cc9c68ee93ebae339e54e55cbc
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link to a known malicious redirector at ttraff.com. The document body, though heavily obfuscated, contains text referencing 'ccleaner for macbook pro' and the malicious URL, suggesting a lure to download potentially unwanted or malicious software. The PDF structure and link farm indicate an attempt to manipulate search engine results or distribute malicious content through deceptive 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.com/pify?keyword=ccleaner++for+macbook+pro
    • http://files.fast-coin.org/uploads/1/3/1/0/131070485/zovawizuruvokoxotog.pdf
    • http://files.internationalradioartresearchgroup.org/uploads/1/3/0/8/130874328/21bac1.pdf
    • http://files.geoffalainllc.com/uploads/1/3/1/6/131606027/zewurizafimivimosi.pdf
    • http://files.geoffalai
    • https://cdn.shopify.com/s/files/1/0430/4040/7701/files/60th_birthday_invitation_template_male.pdf
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/software_architecture_design_illuminated.pdf
    • https://cdn.shopify.com/s/files/1/0430/6078/9409/files/zudemolevi.pdf
    • https://cdn.shopify.com/s/files/1/0429/5393/2966/files/kugusowokilazepigija.pdf
    • https://cdn.shopify.com/s/files/1/0432/2738/1920/files/corsair_void_pro_wireless_drivers.pdf
    • https://cdn.shopify.com/s/files/1/0435/1829/6232/files/nimoga.pdf
    • https://cdn.shopify.com/s/files/1/0429/0510/8636/files/66439036177.pdf
    • https://cdn.shopify.com/s/files/1/0430/6380/4058/files/mepofu.pdf
    • https://cdn.shopify.com/s/files/1/0432/6513/0660/files/fulawivabozat.pdf
    • https://cdn.shopify.com/s/files/1/0440/7725/2760/files/inventory_aging_report_example.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84770620138.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_off00006322.bin
c21e7d575e54a55b2c041b542cf0b97ed708583e3ea73794eedaafe1003eb958		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6322 5092 bytes
font_01_sfnt_off00007455.bin
4b39e3f62e91f5d02a38c0b6bb097a5df49373947dd8f284e0e98af32bdf1052		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7455 9840 bytes

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