Malicious PDF — malware analysis report

Static analysis result for SHA-256 c955802d4e9f74e2…

MALICIOUS

PDF

45.1 KB Created: 2020-08-14 03:22:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3ad051963628ba1b2625ccb5f336f57c SHA-1: c19e51818c22db1b7afb6dcb69e1a7ea7a1992dc SHA-256: c955802d4e9f74e28a687dae3ff6ebb3c1ff267b3924c69a25a5db0b93b607b4
120 Risk Score

Malware Insights

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

The PDF file contains a link farm and a direct link to a known malicious redirector, disguised with text suggesting a "CNN live tv app android" download. The primary heuristic indicates the PDF links to malicious redirector infrastructure. The document body, though heavily obfuscated, contains the malicious URL and references to the lure. No scripts were extracted from this sample.

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=cnn+live+tv+app+android
    • http://woruvi.manrikishimoto.com/uploads/1/3/1/1/131163599/feremadevimo-gukanumus-lixedoletesowe-nememumemidim.pdf
    • http://sarapesot.wstaylor.info/uploads/1/3/0/7/130776760/fakut-xekowe-petusoribigab-zavuwovi.pdf
    • http://daroboj.redcoaching.co.uk/uploads/1/3/1/8/131871991/3329421.pdf
    • http://files.mazesofthecentury.com/uploads/1/3/1/3/131383719/dusubewevi.pdf
    • http://files.ancientcraftstudio.com/uploads/1/3/1/6/131607374/f068e9693c6.pdf
    • https://cdn.shopify.com/s/files/1/0431/8278/4676/files/23041638579.pdf
    • https://cdn.shopify.com/s/files/1/0440/0971/7910/files/gategokatetolavojabirati.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/1402562920.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gomejalubewetilukifij.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45035229099.pdf
    • https://cdn.shopify.com/s/files/1/0430/6095/3249/files/56691669911.pdf
    • https://cdn.shopify.com/s/files/1/0432/7338/8190/files/pezuvalorugapudume.pdf
    • https://cdn.shopify.com/s/files/1/0434/7848/3096/files/51168491671.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/20726054751.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gobobuxewinunegurugita.pdf
    • https://cdn.shopify.com/s/files/1/0430/5666/0633/files/juwepusexe.pdf
    • https://cdn.shopify.com/s/files/1/0437/2067/1400/files/ppt_slides_templates_free.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_off00007472.bin
21d6bd73affdc148fcf56ac1e29739f45d5621b1ee8fd041b776b246238289da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7472 4740 bytes
font_01_sfnt_off0000849b.bin
a1b6aa6ff761b4f096715ba571d9049d15755c680f29f02f7c3ed36e172a48b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x849B 10196 bytes

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