Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0af10f777ff4fa8…

MALICIOUS

PDF

37.0 KB Created: 2020-08-31 05:43:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 41359913d23abc5026f84414c3ba0095 SHA-1: f06d9263a4369247f4ba0f51c416bd4ac5d1b7da SHA-256: b0af10f777ff4fa82fddf915e5af53cedf9668d83823d1dfe84507dde667c8a6
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure via the URL https://ttraff.com/wix?keyword=nioh+tacticians+ingenuity. This suggests the document is designed to lure users to 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/wix?keyword=nioh+tacticians+ingenuity
    • https://cdn.shopify.com/s/files/1/0429/7526/4919/files/ecology_biology_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0431/2937/2821/files/rotojupudifezurifabofevaf.pdf
    • https://cdn.shopify.com/s/files/1/0437/0910/4279/files/2008_hyundai_accent_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/7303/4657/files/rudax.pdf
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/pewoxibenarube.pdf
    • https://cdn.shopify.com/s/files/1/0433/7405/1491/files/projeto_piscicultura_tanque_rede.pdf
    • https://cdn.shopify.com/s/files/1/0435/5181/7883/files/wii_iso_download_sites.pdf
    • https://cdn.shopify.com/s/files/1/0437/4324/8533/files/46526081069.pdf
    • https://cdn.shopify.com/s/files/1/0432/1165/3277/files/35049650374.pdf
    • https://cdn.shopify.com/s/files/1/0431/6856/3355/files/1760792374.pdf
    • https://cdn.shopify.com/s/files/1/0430/4388/1114/files/rekadudaxem.pdf
    • https://cdn.shopify.com/s/files/1/0439/6164/7262/files/47893352530.pdf
    • https://cdn.shopify.com/s/files/1/0429/1110/5191/files/tifuvopusifelol.pdf
    • https://cdn.shopify.com/s/files/1/0431/0643/5232/files/77814525096.pdf
    • https://cdn.shopify.com/s/files/1/0432/2449/8343/files/73759687308.pdf
    • https://cdn.shopify.com/s/files/1/0435/1492/1112/files/swat_valley_travel_guide.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/
    • https://cdn.shopify.com/s/files/1/0432/2449/8

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000053f8.bin
be13056345abdaecb3e010026a5857fe78d49904d72330faffb9dd7f870250d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53F8 5004 bytes
font_01_sfnt_off00006502.bin
09384362c62fddeb5ff60e3cebdf6b60b80703dd5c498a5390a36263ee3fada0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6502 9892 bytes

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