Malicious PDF — malware analysis report

Static analysis result for SHA-256 8aebff29b3a3ac89…

MALICIOUS

PDF

39.7 KB Created: 2020-08-21 18:27:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 40d1e440c97b1545f89d7d51a85e8ca4 SHA-1: a7c77b63e788409d4adb1f8e44d863b4a550eaed SHA-256: 8aebff29b3a3ac890a1590c8f3796033761f51da62000e895b44bc1939f5fa40
120 Risk Score

Malware Insights

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

The PDF file was flagged for containing a malicious redirector link and a large number of embedded links, indicating a link farm strategy. The primary malicious URL identified is ttraff.com, which is known for redirecting to malicious content. The document body contains garbled text but includes the primary malicious URL and several other PDF links, some of which are hosted on Shopify. The presence of numerous links suggests an attempt to lure users to external, potentially malicious, sites.

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=emulator+meaning+in+android
    • http://saletesi.exploringwithdora.com/uploads/1/3/2/8/132814930/numuginafevix.pdf
    • https://cdn.shopify.com/s/files/1/0428/8974/0441/files/2459786540.pdf
    • https://cdn.shopify.com/s/files/1/0434/7569/7830/files/dalulegifefeloroti.pdf
    • https://cdn.shopify.com/s/files/1/0433/8289/8840/files/50583119886.pdf
    • https://cdn.shopify.com/s/files/1/0441/0490/8952/files/beban.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/76588695657.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8864/files/pakujuginuvonigipozatenoz.pdf
    • https://cdn.shopify.com/s/files/1/0449/5890/8584/files/european_guidelines_differentiated_thyroid_cancer.pdf
    • https://cdn.shopify.com/s/files/1/0433/4786/9850/files/boboiboy_solar_wallpaper.pdf
    • https://cdn.shopify.com/s/files/1/0434/0629/5201/files/43123119835.pdf
    • https://cdn.shopify.com/s/files/1/0434/9621/0594/files/remaweso.pdf
    • https://cdn.shopify.com/s/files/1/0432/0421/4942/files/folezovadelige.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_off00005d41.bin
e9c5be20daaa8288df8bce251b512940dd2bacdd863b84911ce24608e2bb28c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D41 4924 bytes
font_01_sfnt_off00006de9.bin
beaeb8fc24897f65b9c36da115825292e2c6058351b248f0d19f9d86873f1bc9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DE9 10652 bytes

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