Malicious PDF — malware analysis report

Static analysis result for SHA-256 e20c6eb898876e03…

MALICIOUS

PDF

52.2 KB Created: 2020-08-06 12:41:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01d9bc76e74f9b24af8a6e4b24a31213 SHA-1: 320314303a2ed10412ecbdd72a99559918ec0ca6 SHA-256: e20c6eb898876e03259ed792c554ddf76483baefeeed7edd2b67d13ae8e885ef
150 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which point to a redirector service. The primary malicious link, https://ttraff.cc/pify?keyword=zelda+breath+of+the+wild+cookbook+pdf, is designed to trick users into downloading content by appearing to offer a popular PDF. The document body, though heavily obfuscated, contains this URL and other benign-looking Shopify links, likely to create a false sense of legitimacy. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=zelda+breath+of+the+wild+cookbook+pdf
    • http://fusogive.escapelandscaping.net/uploads/1/3/1/4/131482995/furavolamibone_ropunute.pdf
    • http://zawiva.zhaimen.org/uploads/1/3/1/3/131398140/5a95e37.pdf
    • http://rawusibuk.moodmetals.com/uploads/1/3/0/7/130738970/da14871556.pdf
    • https://cdn.shopify.com/s/files/1/0428/8207/2732/files/fitufuxisiwosuzebovar.pdf
    • https://cdn.shopify.com/s/files/1/0428/6346/0508/files/learn_ableton_live_9.pdf
    • https://cdn.shopify.com/s/files/1/0429/7578/9215/files/catecismo_menor_westminster.pdf
    • https://cdn.shopify.com/s/files/1/0434/4116/0344/files/free_business_plan_samples.pdf
    • https://cdn.shopify.com/s/files/1/0432/4291/3955/files/80168236207.pdf
    • https://cdn.shopify.com/s/files/1/0433/9741/5077/files/capital_of_countries_in_asia.pdf
    • https://cdn.shopify.com/s/files/1/0431/1236/6241/files/burial_rites.pdf
    • https://cdn.shopify.com/s/files/1/0429/2355/7030/files/98427243840.pdf
    • https://cdn.shopify.com/s/files/1/0428/6559/0438/files/piano_man_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0427/5165/6102/files/wejovezolelot.pdf
    • https://cdn.shopify.com/s/files/1/0432/0867/1394/files/xopapilel.pdf
    • https://cdn.shopify.com/s/files/1/0431/7826/2689/files/ponikivafidilamorugax.pdf
    • https://cdn.shopify.com/s/files/1/0427/9762/9596/files/popuvujurun.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_off00006f03.bin
0a873ccdbf20b213800f5dd18a6f726a8d31073b7104186688d799531b6bb275
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F03 5316 bytes
font_01_sfnt_off00008123.bin
b624f3cd8d7bda81a5fad2f8c387f64e655cb1a6fe10bb9f53df9b9f78b7f90f
pdf-font-stream PDF embedded font (sfnt) at offset 0x8123 14424 bytes
font_02_sfnt_off0000ae58.bin
3f70697d8cfd0b9becff5adcad726f9ffedcc5d773cc6f7abbcc82b2f8034994
pdf-font-stream PDF embedded font (sfnt) at offset 0xAE58 16164 bytes