Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4d539cb0eff7b6d…

MALICIOUS

PDF

44.7 KB Created: 2020-07-29 06:46:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4dab2336796c301ed8da7232c9d08481 SHA-1: cc8f4a96429775bfbdff921ed39ae0f685d3fc2e SHA-256: d4d539cb0eff7b6dd2d983345a1a1d77964fc8aa5107fb44e9a235676cb14e15
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains but are likely part of a link farm. One critical heuristic indicates that a link within the document redirects to known malicious infrastructure (ttraff.ru). This suggests the document's primary purpose is to redirect users to malicious sites, potentially for phishing or malware distribution.

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.ru/pify?keyword=exponents+worksheet+pdf+7th+grade
    • http://files.sharehisstory.org/uploads/1/3/0/7/130776326/dd7da3ff6.pdf
    • http://files.ruralchurchpastorsnetwork.com/uploads/1/3/1/8/131856166/0c07c28fe43.pdf
    • http://files.itfcwomen.co.uk/uploads/1/3/2/6/132682570/b6487.pdf
    • http://files.healthyjuicedietlife.com/uploads/1/3/2/7/132740185/lanavikefoxe.pdf
    • http://files.sbfence.com/uploads/1/3/0/7/130776655/9082740.pdf
    • http://files.healthyjuicedietlife.com/uploa
    • https://cdn.shopify.com/s/files/1/0433/7028/3173/files/11785701154.pdf
    • https://cdn.shopify.com/s/files/1/0438/1527/2605/files/ludekuv.pdf
    • https://cdn.shopify.com/s/files/1/0429/4007/2092/files/lagutubuzemiduxeburumawup.pdf
    • https://cdn.shopify.com/s/files/1/0430/6875/2023/files/larolodafotikewa.pdf
    • https://cdn.shopify.com/s/files/1/0432/6529/4504/files/46967526720.pdf
    • https://cdn.shopify.com/s/files/1/0431/2072/2080/files/difakonomufodevorogi.pdf
    • https://cdn.shopify.com/s/files/1/0431/4782/1212/files/sekuzawiberavonuzizotuvo.pdf
    • https://cdn.shopify.com/s/files/1/0433/3341/9166/files/dumasegewaxefovij.pdf
    • https://cdn.shopify.com/s/files/1/0434/1265/2194/files/rurumibuzosabuzumi.pdf
    • https://cdn.shopify.com/s/files/1/0430/1576/6177/files/kezelodamuxijamefag.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_off0000727d.bin
38bab5b4314fbec8acd491f352425f0ddf80105bfe50e1bfd0d0cfb7a6550a25		 pdf-font-stream PDF embedded font (sfnt) at offset 0x727D 5272 bytes
font_01_sfnt_off00008479.bin
e648b3d0f505afa5c86d2277cedbabc32d24c14c6cd05084c10e4a677b08b07b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8479 9760 bytes

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