Malicious PDF — malware analysis report

Static analysis result for SHA-256 9243ac5ad289c7d5…

MALICIOUS

PDF

39.8 KB Created: 2020-08-29 18:11:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6f17c8131eb328340958a911f0f3f154 SHA-1: 531fa0c478a1e60b736bc5f898dedbeb35f37f27 SHA-256: 9243ac5ad289c7d5bc80fae369b26792fb3a3d2aaa70e36d9172d5a80b402483
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/wix?keyword=best+blogger+template+for+adsense'. The document body, though heavily obfuscated, also contains this URL and numerous other links to Shopify-hosted PDFs, suggesting a link farm or SEO poisoning tactic. The primary intent appears to be redirecting users to malicious infrastructure via a deceptive lure.

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/wix?keyword=best+blogger+template+for+adsense
    • https://cdn.shopify.com/s/files/1/0431/2019/7789/files/lomuragusaluxo.pdf
    • https://cdn.shopify.com/s/files/1/0428/1221/1359/files/ziwobobexibalumuzoreser.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wifufokamavobopizevotug.pdf
    • https://static.usrfiles.com/ugd/b8c837_1e1b53810f3c4f40845d9516e48d21d0.pdf
    • https://static.usrfiles.com/ugd/b8c837_7f7686a7622342cfad11157ba836d705.pdf
    • https://static.usrfiles.com/ugd/b8c837_f1d17ea3e33440948861fda7e529286d.pdf
    • https://static.usrfiles.com/ugd/b8c837_e4323a003c2a4f70a9d681c3d6c78536.pdf
    • https://static.usrfiles.com/ugd/f515ca_30a0990b367c461d870da73466d19b9c.pdf
    • https://static.usrfiles.com/ugd/b8c837_35f58c7f1bdb4e2b92f86599e2795825.pdf
    • https://cdn.shopify.com/s/files/1/0438/8411/8171/files/devusi.pdf
    • https://cdn.shopify.com/s/files/1/0428/5746/3971/files/94337407957.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zabaravoxetifup.pdf
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/pioneer_gm-_5500t.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/63980821860.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_off00005e05.bin
539985b29d0c8a90911cb586f0f43962f9269450474b4a30cf9952d4873dd6ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E05 5552 bytes
font_01_sfnt_off000070c5.bin
7b5a16a6f161fe35a760743a2df6bf425be8de251d35160f7305eb623398ec9d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70C5 9840 bytes

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