Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1d355173df33a9b…

MALICIOUS

PDF

38.9 KB Created: 2020-08-18 22:45:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46e68bc8d460dd1edb549535e997d359 SHA-1: 8881a5a633c67239dba3788f594677fad2f6ed8a SHA-256: c1d355173df33a9b9a5bc1bc43370366890e66eb0652f9d46614ad5f21225099
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of numerous external links, including a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK pointing to 'ttraff.com'. The PDF also exhibits characteristics of a link farm, with a large number of embedded links, many of which are to Shopify domains, but some are to unknown or potentially malicious domains. The document body contains obfuscated text and embedded URLs, suggesting an attempt to lure users into clicking malicious 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=word+document+booklet+template
    • http://nezaso.asantecreatives.com/uploads/1/3/0/8/130814017/gogogajopimozilo.pdf
    • http://files.michaelandsydneylovepi.com/uploads/1/3/0/9/130969580/de5517310a32bb.pdf
    • http://files.nanditamukand.com/uploads/1/3/0/7/130739247/8cd6b86d6a.pdf
    • http://files.mulvaneystudios.com/uploads/1/3/1/3/131379919/povibenutive.pdf
    • https://cdn.shopify.com/s/files/1/0430/2385/9873/files/golden_software_grapher_4_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/7831/1326/files/90707247684.pdf
    • https://cdn.shopify.com/s/files/1/0431/2891/4074/files/quintiles_get_with_the_guidelines_login.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/somerurunem.pdf
    • https://cdn.shopify.com/s/files/1/0434/0262/5178/files/96055165997.pdf
    • https://cdn.shopify.com/s/files/1/0437/2470/1845/files/functional_cv_format.pdf
    • https://cdn.shopify.com/s/files/1/0429/3243/7158/files/6077592416.pdf
    • https://cdn.shopify.com/s/files/1/0428/9550/7622/files/14143916219.pdf
    • https://cdn.shopify.com/s/files/1/0428/2236/9446/files/xegawewojovevegago.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/19227598733.pdf
    • https://cdn.shopify.com/s/files/1/0430/1848/5923/files/mocha_tests_tutorial.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_off00005c73.bin
e65a1f72a31ddfba82a15069082a42cffd701dc2bae0680cb5a428ac395dfca6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C73 5256 bytes
font_01_sfnt_off00006e3d.bin
661f2200348c7ef52932f6f5f264116d48acdb5f5cdbc1c9411789dfb0c28e0d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E3D 9632 bytes

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