Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7de716495cdc70d…

MALICIOUS

PDF

56.2 KB Created: 2020-08-23 14:16:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e7950a2a3cb150e649220c95c8900d6 SHA-1: b474acc24131564733b1c94488448c08dd65d8df SHA-256: c7de716495cdc70d3f5d88565b52d465393c94a32845835854a435e1e43da1ff
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, embedding a large quantity of external links. One of these links, 'https://ttraff.cc/pify?keyword=platformio+vscode+serial+monitor', is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL and other Shopify-hosted PDF links, suggesting an attempt to lure users to potentially harmful content through a deceptive link structure.

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=platformio+vscode+serial+monitor
    • http://files.balancedenergies.com/uploads/1/3/1/3/131397987/sudoroduvagi.pdf
    • http://bomafoso.thelegendofauferre.com/uploads/1/3/1/4/131453033/jojakixupokel.pdf
    • https://cdn.shopify.com/s/files/1/0434/9244/2277/files/bsc_agriculture_entrance_exam_model_question_papers.pdf
    • https://cdn.shopify.com/s/files/1/0431/3487/7850/files/45087752015.pdf
    • https://cdn.shopify.com/s/files/1/0429/7487/1715/files/9429530648.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/77160317291.pdf
    • https://cdn.shopify.com/s/files/1/0437/2204/7637/files/guidelines_on_the_management_of_latent_tuberculosis_infection.pdf
    • https://cdn.shopify.com/s/files/1/0432/0195/3952/files/redon.pdf
    • https://cdn.shopify.com/s/files/1/0463/2811/9457/files/15662029169.pdf
    • https://cdn.shopify.com/s/files/1/0428/2961/1171/files/peaky_blinders_season_2_guide.pdf
    • https://cdn.shopify.com/s/files/1/0436/1512/5661/files/bangladesh_flag_picture.pdf
    • https://cdn.shopify.com/s/files/1/0432/4294/6728/files/kisetevobuxajasafigajo.pdf
    • https://cdn.shopify.com/s/files/1/0435/6957/8147/files/67154369820.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_off00008b24.bin
bfc606049977d3c219da6613709e2bf18db5ffe8aced8859dca2018157e497ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B24 5016 bytes
font_01_sfnt_off00009c10.bin
d73c660d711ff9710da4a6ec8db68a901ff005f4b5c81a4ea314efebce3b79e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C10 12728 bytes
font_02_sfnt_off0000c58a.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC58A 4324 bytes

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