Malicious PDF — malware analysis report

Static analysis result for SHA-256 334f8a815b4ebc3c…

MALICIOUS

PDF

38.9 KB Created: 2020-08-21 19:53:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 79d671370e075d7533709f48c35ed82f SHA-1: 1318aceae5038868136553b632826b54e8f92e64 SHA-256: 334f8a815b4ebc3c67e54e2994484fd102d96887e0552a6f5e6a307ead6b0fc8
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=gatsby+anticipation+guide'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with the primary one leading to a Shopify domain. The document body, though heavily obfuscated, contains the redirector URL, suggesting the document's purpose is to direct users to malicious infrastructure under the guise of a Gatsby guide.

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=gatsby+anticipation+guide
    • http://files.dazcoautobodyclips.com/uploads/1/3/0/7/130776814/3319710.pdf
    • https://cdn.shopify.com/s/files/1/0434/0832/6813/files/adding_fractions_common_denominator_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0435/9149/9935/files/dulazelejezolomim.pdf
    • https://cdn.shopify.com/s/files/1/0435/1416/7450/files/tunudonanozibegugulet.pdf
    • https://cdn.shopify.com/s/files/1/0431/0630/4166/files/lawuga.pdf
    • https://cdn.shopify.com/s/files/1/0433/3273/1038/files/51787545063.pdf
    • https://cdn.shopify.com/s/files/1/0430/8549/6482/files/proyecto_de_biblioteca_escolar.pdf
    • https://cdn.shopify.com/s/files/1/0435/6122/2307/files/learning_swedish_language_books.pdf
    • https://cdn.shopify.com/s/files/1/0429/2666/9987/files/zawuwulusidu.pdf
    • https://cdn.shopify.com/s/files/1/0428/5107/4214/files/minecraft_achievement_guide_java.pdf
    • https://cdn.shopify.com/s/files/1/0432/0670/5316/files/56938175328.pdf
    • https://cdn.shopify.com/s/files/1/0431/6617/1287/files/3d_animation_maker_app_android.pdf
    • https://cdn.shopify.com/s/files/1/0440/1581/2766/files/beginning_russian.pdf
    • https://cdn.shopify.com/s/files/1/0437/4963/8295/files/lisasatulufamugureze.pdf
    • https://cdn.shopify.com/s/files/1/0434/4925/4041/files/bavigevulor.pdf
    • https://cdn.shopify.com/s/files/1/0454/6166/7992/files/jigivijuketovapiwika.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_off00004aaf.bin
3d4760ca295192c89086870ebbac49c5a5945404ea6ab57fca452cf2db5f569a
pdf-font-stream PDF embedded font (sfnt) at offset 0x4AAF 6440 bytes
font_01_sfnt_off00005aa3.bin
bdd3d1a0ac3131f637cff04057d22b671500be62eacafe1d0b58ece4abca8081
pdf-font-stream PDF embedded font (sfnt) at offset 0x5AA3 5388 bytes
font_02_sfnt_off00006d09.bin
4172c60a835968f111015ec7edebdad7734d946119ed1b25d9614ee5fc41d438
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D09 9776 bytes