Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3638468dda4b0e6…

MALICIOUS

PDF

45.5 KB Created: 2020-08-04 01:10:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8795252939c6fec460fa2a8cc2ab8485 SHA-1: e93f0ef20f0536317389206595c40635c93fe715 SHA-256: c3638468dda4b0e6e41d6b3dfe88166d8743b7e5287c852aedd82a707d386f21
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic identifying a malicious redirector. The primary malicious URL, https://ttraff.com/pify?keyword=trader+vic+s+bartender+s+guide+pdf, is likely used to redirect the user to a malicious site. The document body, though heavily obfuscated, contains references to the URL, reinforcing the malicious intent. The presence of numerous external PDF links suggests a link farm or SEO poisoning tactic to distribute the 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.com/pify?keyword=trader+vic+s+bartender+s+guide+pdf
    • http://files.smallcityvinyl.com/uploads/1/3/2/8/132814166/bomupekawe_megabujakej_negurapiruwu_lozawufe.pdf
    • http://files.staceydenny.com/uploads/1/3/1/3/131380345/7430454.pdf
    • http://mufibuzex.ferrotrend.sk/uploads/1/3/1/4/131483154/f1b43c00f10f.pdf
    • http://mufibuzex.ferrotren
    • https://cdn.shopify.com/s/files/1/0432/4343/8244/files/89887151259.pdf
    • https://cdn.shopify.com/s/files/1/0431/9733/3664/files/kurod.pdf
    • https://cdn.shopify.com/s/files/1/0427/6686/0455/files/varudoki.pdf
    • https://cdn.shopify.com/s/files/1/0433/7080/7459/files/67495801188.pdf
    • https://cdn.shopify.com/s/files/1/0429/5147/5351/files/26299465244.pdf
    • https://cdn.shopify.com/s/files/1/0431/6348/4315/files/jogovomunu.pdf
    • https://cdn.shopify.com/s/files/1/0434/6570/3590/files/kemosuniloxogu.pdf
    • https://cdn.shopify.com/s/files/1/0438/6373/6485/files/arioso_bach_viola.pdf
    • https://cdn.shopify.com/s/files/1/0430/2798/8634/files/numon.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mosagewenusuwaguxizekud.pdf
    • https://cdn.shopify.com/s/files/1/0427/9877/6487/files/19862847806.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_off000072bd.bin
01ad7d8c5d42ac059c52d7518bb0053ad0aed0006abf9ddabba1e1e339047a89		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72BD 5440 bytes
font_01_sfnt_off0000854e.bin
d0549906a41ca957b7bbc847b72e6a5d07436f82ecd52410a0554b681ffe8ab1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x854E 10420 bytes

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