Malicious PDF — malware analysis report

Static analysis result for SHA-256 eabff286add2ce7b…

MALICIOUS

PDF

53.0 KB Created: 2020-08-29 21:17:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f3a97f9b193628cf2e92ca39176f94d SHA-1: 7054e75abe8a5e9eac52dfd6b8b98aff989bf5d4 SHA-256: eabff286add2ce7b4d63cb11fa52bf6a17529127cd6c3aab9f9be1f632fc583d
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, with one identified as a malicious redirector. The document body, though heavily obfuscated, also contains the URL 'https://ttraff.ru/wix?keyword=bdo+easter+event', suggesting a lure related to an online game event. The presence of numerous links points towards a link farm or phishing attempt designed to lead users to malicious content.

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/wix?keyword=bdo+easter+event
    • https://static.usrfiles.com/ugd/b8c837_0eb317c6c08c4944bd06ab3bc6abdd0e.pdf
    • https://static.usrfiles.com/ugd/b8c837_9c71c59435294bb49a24a87059cfecf8.pdf
    • https://static.usrfiles.com/ugd/b8c837_d20b110532c74c6eb7e66faf85c44d35.pdf
    • https://static.usrfiles.com/ugd/a18aa6_4484799fe6874e9491318886829ac5f3.pdf
    • https://static.usrfiles.com/ugd/b8c837_61f930723feb4980888d4976f3627f43.pdf
    • https://cdn.shopify.com/s/files/1/0432/1568/3743/files/88433397809.pdf
    • https://cdn.shopify.com/s/files/1/0431/3153/5524/files/36726711640.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/61286624564.pdf
    • https://cdn.shopify.com/s/files/1/0433/9249/9877/files/sebotewevovumaf.pdf
    • https://cdn.shopify.com/s/files/1/0436/7400/9753/files/affordable_and_clean_energy_articles.pdf
    • https://cdn.shopify.com/s/files/1/0427/9340/2534/files/38318925964.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fixasitisajixumazurezeve.pdf
    • https://cdn.shopify.com/s/files/1/0433/3928/4645/files/17523932934.pdf
    • https://cdn.shopify.com/s/files/1/0466/3243/5877/files/c3_c4_plants.pdf
    • https://cdn.shopify.com/s/files/1/0431/6702/3259/files/kaxedagevukopifuzo.pdf
    • https://cdn.shopify.com/s/files/1/0432/9180/3801/files/al_signore_canter_testo.pdf
    • https://cdn.shopify.com/s/files/1/0433/4570/7166/files/47163324256.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_off00008712.bin
b252d6872523bb24c6a65eb857b79e5a8a871f2a0239c560e388581a9adbfb1f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8712 4896 bytes
font_01_sfnt_off000097c8.bin
d3242c544c95e30e0d800085d8fbb797cf41d15cd8cf23ca823d9b6683a613dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x97C8 15340 bytes

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