Malicious PDF — malware analysis report

Static analysis result for SHA-256 93d44a4684b631c2…

MALICIOUS

PDF

43.8 KB Created: 2020-07-31 19:38:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8a8c1bbced7e457816a4043f58037028 SHA-1: 7af34ef2a41e3340604755b1c5d2b58fdd074a0a SHA-256: 93d44a4684b631c248e1e25b5dddd6e7efd0383220f17ceebbd1ce8decf0d238
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 hosting other PDFs, forming a link farm. One of the primary links, https://ttraff.ru/pify?keyword=out+of+my+league+cast, is identified as a malicious redirector. This suggests the document's purpose is to direct users through a chain of links, likely leading to malicious content or further exploitation.

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=out+of+my+league+cast
    • http://files.swanriverdressage.com/uploads/1/3/1/4/131407388/pisepabaxiralo-mibifusapa-wuzatepa.pdf
    • http://files.firefallseffects.com/uploads/1/3/1/4/131453199/maruroruluki.pdf
    • http://files.abda-hawaii.com/uploads/1/3/0/8/130814226/mugiverigikofebu.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/84535734182.pdf
    • https://cdn.shopify.com/s/files/1/0432/5621/7750/files/bosexufadozalukemuv.pdf
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/14519645194.pdf
    • https://cdn.shopify.com/s/files/1/0434/9244/2277/files/dufigebubapebosesuj.pdf
    • https://cdn.shopify.com/s/files/1/0435/3431/9776/files/58544519167.pdf
    • https://cdn.shopify.com/s/files/1/0430/8575/8617/files/98725994782.pdf
    • https://cdn.shopify.com/s/files/1/0431/0306/0128/files/53657465744.pdf
    • https://cdn.shopify.com/s/files/1/0430/9601/5002/files/49528945435.pdf
    • https://cdn.shopify.com/s/files/1/0436/2646/3385/files/siwezagefuwu.pdf
    • https://cdn.shopify.com/s/files/1/0435/4015/2479/files/16541848832.pdf
    • https://cdn.shopify.com/s/files/1/0431/1502/0448/files/3097580148.pdf
    • https://cdn.shopify.com/s/files/1/0431/4556/0219/files/lulubuwivenedik.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_off000068e8.bin
b9e433a206ec37ce3f5eeb27057c97a0074777f1f2b8d26d2e690b560cc73d11		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68E8 5236 bytes
font_01_sfnt_off00007abb.bin
c7d9a21c5ae72ada8759257165b189bfe0bb0f171f925dfa7325eeda9aff6736		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7ABB 11864 bytes

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