Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4073678ce1877b3…

MALICIOUS

PDF

39.9 KB Created: 2020-08-14 22:43:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 039a8ce6d729a14b3a480d93426a7dde SHA-1: a5d3e50f7df5921dc1e26bac1629ac31dac3b38d SHA-256: c4073678ce1877b3ddf4a124e4bfffc9c5b2da1b568415da72d352ed90ac27b7
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, 'https://ttraff.ru/pify?keyword=contemplated+partnership+definition', is identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Contemplated partnership definition' and the malicious URL, suggesting a lure to trick users into clicking the malicious links.

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.ru/pify?keyword=contemplated+partnership+definition
    • http://files.livingatx.com/uploads/1/3/1/0/131071252/04f872a3c.pdf
    • http://files.schrockhampshires.com/uploads/1/3/2/6/132681336/sikubi.pdf
    • http://files.ccmooresville.com/uploads/1/3/1/3/131381819/tanupip.pdf
    • https://cdn.shopify.com/s/files/1/0433/0923/6374/files/rafotevilavebin.pdf
    • https://cdn.shopify.com/s/files/1/0430/0364/2007/files/72056847999.pdf
    • https://cdn.shopify.com/s/files/1/0429/2201/6934/files/xiwizijuwevedowivurej.pdf
    • https://cdn.shopify.com/s/files/1/0431/7003/7924/files/the_adventures_of_tom_sawyer_full_text.pdf
    • https://cdn.shopify.com/s/files/1/0431/8307/9592/files/xotowuxibopulawelaku.pdf
    • https://cdn.shopify.com/s/files/1/0430/9975/0560/files/71005235375.pdf
    • https://cdn.shopify.com/s/files/1/0431/0790/9794/files/epidemiologia_clinica_laura_moreno_altamirano.pdf
    • https://cdn.shopify.com/s/files/1/0432/7538/7043/files/graduation_announcement_examples.pdf
    • https://cdn.shopify.com/s/files/1/0429/7038/2490/files/61022138671.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_off00005e24.bin
879c8daf5c8a3d4ff9efe842ed7dd34453321adb67b2a4396c03ccedb1bc098c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E24 5188 bytes
font_01_sfnt_off00006f8e.bin
df0abceb34cadc7064326fcf0a90b1b0ad5c2e0389232da1876d1aa50155c53b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F8E 10376 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.