Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5b2d21cf4a4da58…

MALICIOUS

PDF

44.9 KB Created: 2020-08-30 19:39:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6749e16969fab5f8cf7ae07da6f309d7 SHA-1: 64436e02c92bedd00c7f3983294739403ffaf25d SHA-256: d5b2d21cf4a4da58232b871969db36e78856bba94e1d118cb6b64fe37a3c69e5
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to a critical heuristic firing for a malicious redirector link. It also contains a large number of external links, many pointing to Shopify, suggesting a link farm or SEO poisoning attempt. The primary malicious URL is ttraff.me, which is known for redirecting to malicious content. The document body is heavily obfuscated and appears to be generated content rather than user-readable text.

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.me/wix?keyword=3d+max+glasses+pta+516+%2528active%2529
    • https://cdn.shopify.com/s/files/1/0427/9074/8316/files/87254010498.pdf
    • https://cdn.shopify.com/s/files/1/0428/7873/0403/files/antigone_jean_anouilh_lewis_galantiere.pdf
    • https://cdn.shopify.com/s/files/1/0436/0932/5730/files/bloodline_song_ringtone.pdf
    • https://cdn.shopify.com/s/files/1/0440/6686/5302/files/15954944301.pdf
    • https://cdn.shopify.com/s/files/1/0431/1397/1861/files/guxekufunixiz.pdf
    • https://cdn.shopify.com/s/files/1/0437/5642/1278/files/vopemonofupixut.pdf
    • https://cdn.shopify.com/s/files/1/0434/0308/3928/files/85230220660.pdf
    • https://cdn.shopify.com/s/files/1/0431/2127/9132/files/snow_treasure_book.pdf
    • https://cdn.shopify.com/s/files/1/0436/5071/1705/files/kaloxukefi.pdf
    • https://cdn.shopify.com/s/files/1/0440/1466/5886/files/zofufapak.pdf
    • https://cdn.shopify.com/s/files/1/0433/5733/9800/files/16063784512.pdf
    • https://cdn.shopify.com/s/files/1/0437/3784/1813/files/similarity_transformation_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0431/3609/0267/files/61129967127.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tovaje.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_off000070e9.bin
9baeac19a5e52ce3e37c4b6997d3c84033e7dba328016280b50953ab57cae4a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70E9 5976 bytes
font_01_sfnt_off00008550.bin
a87567cbfbe95a3c4f28702dfec00823ef1646058d9144f8f6447589a964671c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8550 9796 bytes

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