Malicious PDF — malware analysis report

Static analysis result for SHA-256 47bd78309b94f02f…

MALICIOUS

PDF

33.0 KB Created: 2020-08-23 06:14:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7dc76ff8f4e98b4fe4183c8ab13e24c3 SHA-1: 0bd62fd13fb122806d08776f02e3c508d24dac8b SHA-256: 47bd78309b94f02fdc29fe218b3b4341dbabce0a376bf30e00fbf0ec76aa5b48
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=soundcloud+songs+with+artwork'. The document body also contains this URL, suggesting it's intended to lure the user to this malicious site. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm strategy, likely to improve SEO for the malicious redirector. The file is classified as malicious due to these findings.

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=soundcloud+songs+with+artwork
    • http://files.jonnystromarchitect.com/uploads/1/3/0/7/130775953/vevijuge_vukumibikeras_rojuv.pdf
    • http://files.markkrawczykactor.com/uploads/1/3/1/4/131483662/3870083.pdf
    • https://cdn.shopify.com/s/files/1/0432/4674/7803/files/41119493536.pdf
    • https://cdn.shopify.com/s/files/1/0435/5905/9615/files/growth_and_decay_word_problems_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/2937/2832/files/mujewuvabuvuw.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dobemajafapurotexujebo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/49186839350.pdf
    • https://cdn.shopify.com/s/files/1/0429/6055/2085/files/61836523767.pdf
    • https://cdn.shopify.com/s/files/1/0434/4751/7341/files/75687672831.pdf
    • https://cdn.shopify.com/s/files/1/0433/3545/0774/files/adobe_reader_9._0_offline_installer.pdf
    • https://cdn.shopify.com/s/files/1/0427/8131/1132/files/81784063907.pdf
    • https://cdn.shopify.com/s/files/1/0431/7793/5005/files/54015010295.pdf
    • https://cdn.shopify.com/s/files/1/0430/4591/2727/files/kraft_heinz_food_company_annual_report.pdf
    • https://cdn.shopify.com/s/files/1/0431/4857/4886/files/50960044605.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_off00004409.bin
e9ad8fa4de7a58c48a5be2749576fd53a47d5e37ff3c2d1717ca26ac4f1f140e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4409 5460 bytes
font_01_sfnt_off00005693.bin
ab40691b0f3f972453826a6a56d52d5de5c9b0a27bfdadedf6bae6e1f3ca05ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5693 9604 bytes

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