Malicious PDF — malware analysis report

Static analysis result for SHA-256 faf8c1ed9fa6fb9a…

MALICIOUS

PDF

36.7 KB Created: 2020-08-27 20:06:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64226f01ba1bc42f979b9f72028c254a SHA-1: 75be0513f49ba0cf6ed2b750fd5f43b6d2e003bf SHA-256: faf8c1ed9fa6fb9a5a3f5f298c5ea3a3912a2473a6ccafbe8664eae0bb655e50
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=visa+et+cvv'. This URL is used in conjunction with a large number of external PDF links, suggesting a link farm or redirection tactic. The document body, though obfuscated, contains the text 'Visa et cvv', reinforcing the lure. The primary attack pattern involves tricking the user into clicking the malicious link, likely leading to further compromise.

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/pify?keyword=visa+et+cvv
    • http://zamexi.partnerhc.com/uploads/1/3/0/7/130775350/ritobarox_namokedor_bobigepe_gezoromol.pdf
    • http://bumapa.halfpricefurnitureandmattress.com/uploads/1/3/1/0/131069899/menenog.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kuzizurogepibisomagin.pdf
    • https://cdn.shopify.com/s/files/1/0439/1567/3752/files/36595146940.pdf
    • https://cdn.shopify.com/s/files/1/0429/6713/8470/files/22823175575.pdf
    • https://cdn.shopify.com/s/files/1/0440/4461/5830/files/82902592569.pdf
    • https://cdn.shopify.com/s/files/1/0429/6726/9532/files/47817759196.pdf
    • https://cdn.shopify.com/s/files/1/0431/5742/2229/files/45213440443.pdf
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/26062625088.pdf
    • https://cdn.shopify.com/s/files/1/0435/3739/9960/files/93592385741.pdf
    • https://cdn.shopify.com/s/files/1/0432/2361/3595/files/60131657104.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_off0000482e.bin
5a99a5e5917026cb949426b26fa6931652a58f50cce4d87e0d003a93b7ebf699		 pdf-font-stream PDF embedded font (sfnt) at offset 0x482E 4264 bytes
font_01_sfnt_off000056a6.bin
04cac609437e6fb0d14da799ef42666db65822a472e5f9672bd353137b2d97d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56A6 10184 bytes
font_02_sfnt_off00007870.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7870 4324 bytes

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