Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2a3303767edfb8e…

MALICIOUS

PDF

43.1 KB Created: 2020-08-21 04:50:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e7077c936a0c240b8971222d9fa45d1 SHA-1: 3a4ea4a9d71e27e61c34381b28cb45330cbead9a SHA-256: f2a3303767edfb8e13816831d6f23b4566ef547379c7c8670bb9f20637fbbe8c
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document contains a link farm designed to redirect users to malicious infrastructure. The primary malicious URL identified is https://ttraff.ru/pify?keyword=2+column+table+template+html, which is flagged as a known malicious redirector. The document body, though heavily obfuscated, contains references to this URL and other PDF files hosted on various domains, suggesting a SEO poisoning or link farm attack. No scripts were extracted from this sample.

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=2+column+table+template+html
    • http://files.bakeitsg.com/uploads/1/3/1/4/131409677/bolivebizak_pukopubikosado_vevexibupuxu.pdf
    • http://files.lamsgolflinks.com/uploads/1/3/0/7/130739260/9123076.pdf
    • http://files.staiguefortcottage.com/uploads/1/3/0/7/130739239/vuxurer.pdf
    • https://cdn.shopify.com/s/files/1/0431/9979/1268/files/vafepo.pdf
    • https://cdn.shopify.com/s/files/1/0435/4854/1079/files/nogavopabe.pdf
    • https://cdn.shopify.com/s/files/1/0428/1031/0822/files/93329895626.pdf
    • https://cdn.shopify.com/s/files/1/0432/8806/8254/files/33791923971.pdf
    • https://cdn.shopify.com/s/files/1/0430/7851/6885/files/agneepath_movie_full_hd_song.pdf
    • https://cdn.shopify.com/s/files/1/0430/0010/3071/files/11041194451.pdf
    • https://cdn.shopify.com/s/files/1/0428/5041/8847/files/46216238326.pdf
    • https://cdn.shopify.com/s/files/1/0439/7016/6942/files/powiliruvukomogamusaf.pdf
    • https://cdn.shopify.com/s/files/1/0429/1543/0559/files/detar.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vewurobafug.pdf
    • https://cdn.shopify.com/s/files/1/0439/7514/7678/files/72818234274.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f96.bin
db64a4691a761e65542288d07dfa48ea9a963adb995d2426cc5bdd736a69c6e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F96 3184 bytes
font_01_sfnt_off00006aec.bin
154612d5a278c5e72887e4bc00342615c4fbb2cb63d13ec09730c6383183e34d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AEC 5076 bytes
font_02_sfnt_off00007bfa.bin
31d1dd83c859bb1bc75ce8001187ceef51ff69f803f31144ce05c7c92094caa4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BFA 10460 bytes

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