Malicious PDF — malware analysis report

Static analysis result for SHA-256 9118e6f4c55ff385…

MALICIOUS

PDF

42.2 KB Created: 2020-07-31 20:58:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6102e53ea431402a9dd5d8bc2cb9c00a SHA-1: 724948758fa25fa441d5c70d98a2a90f60838a01 SHA-256: 9118e6f4c55ff3853280feb554a83af9da230274b19be354079b1f5cd51e748c
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external PDF links, suggesting a link farm designed to manipulate search engine results or distribute malicious content. The primary malicious URL identified is https://ttraff.cc/pify?keyword=change+calculator+java, which likely serves as a gateway to further malicious activity.

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.cc/pify?keyword=change+calculator+java
    • http://files.backcountryclassroom.net/uploads/1/3/0/9/130969712/4b899b403e9a.pdf
    • http://files.mtcalvarymbchurch.com/uploads/1/3/1/4/131407547/sexisinamupolop_farobowotelam_dagunu.pdf
    • http://files.backonyourfeetmassage.com/uploads/1/3/1/3/131398134/sutanavelofomu_gerubaxevig.pdf
    • https://cdn.shopify.com/s/files/1/0434/0659/0106/files/woxisimakuzitid.pdf
    • https://cdn.shopify.com/s/files/1/0430/0252/7897/files/27231400006.pdf
    • https://cdn.shopify.com/s/files/1/0431/2177/0656/files/bufiresugilevoforuke.pdf
    • https://cdn.shopify.com/s/files/1/0434/6681/7689/files/relopunebawokufoput.pdf
    • https://cdn.shopify.com/s/files/1/0430/6914/5241/files/xolebukoradofupibubas.pdf
    • https://cdn.shopify.com/s/files/1/0439/2960/0168/files/56230554782.pdf
    • https://cdn.shopify.com/s/files/1/0437/6120/5399/files/63965420743.pdf
    • https://cdn.shopify.com/s/files/1/0435/8832/1435/files/xowetupibasalij.pdf
    • https://cdn.shopify.com/s/files/1/0438/1310/9917/files/62825395044.pdf
    • https://cdn.shopify.com/s/files/1/0430/4361/8965/files/5799689791.pdf
    • https://cdn.shopify.com/s/files/1/0434/2457/9736/files/lejuvavuzafodawoxe.pdf
    • https://cdn.shopify.com/s/files/1/0432/6594/9862/files/12731390815.pdf
    • https://cdn.shopify.com/s/files/1/0428/5631/7091/files/rudosaxejatorezakuzowu.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_off00005eaa.bin
ae1533525571f95b18cccd09cb6c106313d30cebbb63f368891c9e86f950c547		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EAA 4924 bytes
font_01_sfnt_off00006f6e.bin
8b36d1724bb9b53de12b24837314e0d42a7925200b83ae3da6033ab4e85e8efb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F6E 13968 bytes

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