Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5c30ef5f73782f0…

MALICIOUS

PDF

34.1 KB Created: 2020-09-02 04:45:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3c5fe394509372c8f9ab27f2120655bb SHA-1: c1a3ab372ac03f06445f13396584d906669d712a SHA-256: a5c30ef5f73782f033c55d11906d1c7b29e5de1b0025d3461002475829647ad6
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a heuristic identifying it as a PDF link farm. One of these links, 'https://ttraff.com/wix?keyword=ten+sports+live+apk+app', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the primary purpose is to redirect users to malicious content. No scripts were extracted, limiting the analysis of further execution chains.

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/wix?keyword=ten+sports+live+apk+app
    • https://cdn.shopify.com/s/files/1/0428/8082/7558/files/fiwekobovoxulaxololijoj.pdf
    • https://cdn.shopify.com/s/files/1/0432/5598/8387/files/wajulakomokerizizipu.pdf
    • https://cdn.shopify.com/s/files/1/0428/4727/3116/files/tabasada.pdf
    • https://static.usrfiles.com/ugd/83d902_17269ff7ea6f4f6188e41928478c511b.pdf
    • https://cdn.shopify.com/s/files/1/0429/5576/7967/files/ln46a650a1fxza_inverter_board.pdf
    • https://cdn.shopify.com/s/files/1/0444/5673/8983/files/habitos_alimentarios_de_los_adolescentes.pdf
    • https://cdn.shopify.com/s/files/1/0462/6346/8189/files/delowikezimug.pdf
    • https://static.usrfiles.com/ugd/b8c837_1f629cc0bc584e1088d5d1d04d2847f5.pdf
    • https://static.usrfiles.com/ugd/89c6ad_8d48dc52bfc144279f19f8c9a21d69a8.pdf
    • https://static.usrfiles.com/ugd/ac51ce_68b95894ded6404eaefc8c1d5ed650f9.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_off00004978.bin
62d3b2954dd8e9d27c2edc2a12048f5fcdf79ebd7747fbcc571bc34def965604		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4978 4884 bytes
font_01_sfnt_off00005a29.bin
cd4ede706c4c8473add15e313b755c422fd261d5cb6219db9058e3c5bc5587c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A29 9816 bytes

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