Malicious PDF — malware analysis report

Static analysis result for SHA-256 a63232e44aecbc61…

MALICIOUS

PDF

50.5 KB Created: 2020-08-30 11:53:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 94465005631a42fcd93f88833d9d70ea SHA-1: ecb9f543acea0df28a4a45cc2aa660df727bf929 SHA-256: a63232e44aecbc61b25380840dbbd9b9ca5ebaeb7c44d479f6598ffb3a040764
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. This URL is presented within the document body, suggesting a social engineering lure to trick users into clicking it. The presence of numerous external PDF links, identified by the PDF_SEO_LINK_FARM heuristic, further indicates an attempt to drive traffic to external sites, likely for malicious purposes.

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=the+speed+of+trust+pdf+free+download
    • https://cdn.shopify.com/s/files/1/0437/7713/0647/files/web_templates_html5_css3_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/8251/3561/files/48077766862.pdf
    • https://cdn.shopify.com/s/files/1/0435/3923/4967/files/52455629220.pdf
    • https://cdn.shopify.com/s/files/1/0434/7301/0850/files/76990754690.pdf
    • https://cdn.shopify.com/s/files/1/0433/4537/9478/files/2916008018.pdf
    • https://cdn.shopify.com/s/files/1/0432/3583/6061/files/pibizifewigapulemexewure.pdf
    • https://cdn.shopify.com/s/files/1/0433/3528/6943/files/99049411367.pdf
    • https://static.usrfiles.com/ugd/b8c837_9a36e93acd664a8b90e6c3864820f749.pdf
    • https://static.usrfiles.com/ugd/bb13a2_37805ec0438b44dc9cb4cbd223e68467.pdf
    • https://static.usrfiles.com/ugd/b8c837_8265837a8ebd448487f0a880658327f6.pdf
    • https://cdn.shopify.com/s/files/1/0441/2856/7448/files/72287797894.pdf
    • https://cdn.shopify.com/s/files/1/0429/0058/6649/files/gesagutipeluta.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_off0000889d.bin
e705bbc9aaad479763c798984a7710b1f19775cbe9c143f3ca008afc1a610922		 pdf-font-stream PDF embedded font (sfnt) at offset 0x889D 5168 bytes
font_01_sfnt_off00009a3a.bin
73e4840143f3fa3ae1177abfa00b53d1a8a84aad5fc1c00d9769d06c9561e1ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A3A 10120 bytes

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