Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2a128f0fe7012f6…

MALICIOUS

PDF

48.1 KB Created: 2020-07-29 20:39:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44e7f9b7493ae75e4108379d7f4a717c SHA-1: 6e679ee317e33f217c29bfbc50e5ec2185370729 SHA-256: d2a128f0fe7012f6b2143d1413fa7d47bfbb43b68307955bb09137d2be0ed691
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text related to downloading a catalog, aligning with the redirector's apparent purpose. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm or content distribution network being leveraged for malicious redirection.

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=telecharger+catalogue+marjane+pdf
    • http://files.happyhoundsk9training.com/uploads/1/3/1/3/131383251/3608864.pdf
    • http://files.distinctlycanadian.com/uploads/1/3/2/6/132681647/98667.pdf
    • http://files.demesstainedglass.com/uploads/1/3/1/4/131483719/gowes-kikikugabisari-fosuwopezo-jevugalawefo.pdf
    • http://files.demesstainedglass.com/uploads/1/3/1/4/131483719/gowes-kik
    • https://cdn.shopify.com/s/files/1/0431/1960/7962/files/17428058574.pdf
    • https://cdn.shopify.com/s/files/1/0436/8711/6965/files/26317907007.pdf
    • https://cdn.shopify.com/s/files/1/0433/9413/8268/files/21596369759.pdf
    • https://cdn.shopify.com/s/files/1/0432/6513/0658/files/mexixixugademadavasuzabug.pdf
    • https://cdn.shopify.com/s/files/1/0436/1073/4755/files/51635837104.pdf
    • https://cdn.shopify.com/s/files/1/0435/4398/6335/files/kojaponatobexedobiweraw.pdf
    • https://cdn.shopify.com/s/files/1/0434/3519/6566/files/luxaxud.pdf
    • https://cdn.shopify.com/s/files/1/0430/9562/1796/files/vexotazivukajudiku.pdf
    • https://cdn.shopify.com/s/files/1/0433/9915/1768/files/83033065347.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8864/files/25114451610.pdf
    • https://cdn.shopify.com/s/files/1/0432/3786/7687/files/20359664609.pdf
    • https://cdn.shopify.com/s/files/1/0430/8421/8521/files/74901753793.pdf
    • https://cdn.shopify.com/s/files/1/0429/6779/3817/files/35616036116.pdf
    • https://cdn.shopify.com/s/files/1/0430/3329/7058/files/50708296688.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_off000063fc.bin
134a417ba5921cb747f6fecaef106c82054cc894afa9f524eac443b3c985c431		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63FC 5248 bytes
font_01_sfnt_off000075b6.bin
c97617c0d61a55891ae351b0da5da7aba142039b16c35216b4c6d732a5082e6b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75B6 10840 bytes
font_02_sfnt_off00009a73.bin
171d4107cd6e4cad68e97929a2c95ba9cd846727d4a09d707e20321686aaa854		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A73 17072 bytes

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