Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbba3c13a47980a2…

MALICIOUS

PDF

40.0 KB Created: 2020-08-04 21:32:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 57317837bd1325489b8da36e55e42938 SHA-1: 5b4da622f2313c65f502eca1df8c8b079c5f3b9f SHA-256: cbba3c13a47980a2f84adf90d9cc5c995c233670d551daef441f3131a2875ff2
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 'ttraff.com'. This URL is presented to the user in a context suggesting a lure for "solid principles pdf". The file also contains a large number of embedded links, many hosted on Shopify, which is indicative of a link farm or SEO poisoning attempt to drive traffic to malicious sites. The document body is heavily obfuscated but contains the target URL.

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=solid+principles+pdf
    • http://files.jjjohnsonauthor.com/uploads/1/3/1/4/131437268/lotoxaboxubuw.pdf
    • http://files.coachtiffkelley.com/uploads/1/3/1/4/131437291/636754e.pdf
    • http://files.thesilverfantasy.com/uploads/1/3/1/3/131381518/a52cdffb553.pdf
    • https://cdn.shopify.com/s/files/1/0435/5971/4971/files/73312757912.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rajijabobuzev.pdf
    • https://cdn.shopify.com/s/files/1/0429/4954/2047/files/tuviramelijujo.pdf
    • https://cdn.shopify.com/s/files/1/0434/8506/9477/files/45183127396.pdf
    • https://cdn.shopify.com/s/files/1/0433/3718/7493/files/voxogapeginobisagube.pdf
    • https://cdn.shopify.com/s/files/1/0428/1673/3340/files/73521250531.pdf
    • https://cdn.shopify.com/s/files/1/0431/6846/5053/files/9221916035.pdf
    • https://cdn.shopify.com/s/files/1/0440/6244/1637/files/musodijetogogikubateb.pdf
    • https://cdn.shopify.com/s/files/1/0429/7146/3831/files/perisutufugojukofolixi.pdf
    • https://cdn.shopify.com/s/files/1/0430/2051/7537/files/78812850141.pdf
    • https://cdn.shopify.com/s/files/1/0430/9532/6887/files/dawugowenedotazufefa.pdf
    • https://cdn.shopify.com/s/files/1/0431/0673/0138/files/53097913014.pdf
    • https://cdn.shopify.com/s/files/1/0436/4356/8278/files/java_queue_example.pdf
    • https://cdn.shopify.com/s/files/1/0430/2703/8359/files/30614265519.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/welilavuruwad.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_off00006065.bin
2d1b4608e3b2b5880c2ebfeb73db89595c3e28d243224e9c4d938637ab589c6a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6065 5040 bytes
font_01_sfnt_off00007197.bin
7b151c8aec32dbac3d70b4fd4b6b7615c11bc5c301596faf1783e015c2b121fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7197 9904 bytes

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