Malicious PDF — malware analysis report

Static analysis result for SHA-256 31dbe4844c9f7d59…

MALICIOUS

PDF

56.5 KB Created: 2020-08-25 06:00:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab67d131896d68aa51e41786e6975a36 SHA-1: 3a0e4a41ab419cc988108a50256529ffb1278e00 SHA-256: 31dbe4844c9f7d59f730abbe3b284a0b1ce2eb3bf53be355d9cb801a23a1b5eb
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. The document body, though heavily obfuscated, also contains this URL and other links to Shopify-hosted PDFs, suggesting a link farm or SEO poisoning attempt. The primary malicious URL is 'https://ttraff.cc/pify?keyword=elastic+collisions+physics+classroom+worksheet+answers', which is likely used to redirect users to malicious content.

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=elastic+collisions+physics+classroom+worksheet+answers
    • http://zegudojo.flagrantproductions.net/uploads/1/3/1/4/131483453/nonisux.pdf
    • http://files.mysclam.com/uploads/1/3/1/3/131379395/kerikejasof_lofatunumoguvu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8333/3799/files/cambodian_history.pdf
    • https://cdn.shopify.com/s/files/1/0431/2884/8538/files/gugutajo.pdf
    • https://cdn.shopify.com/s/files/1/0430/6678/5949/files/dusaxipotofod.pdf
    • https://cdn.shopify.com/s/files/1/0432/6152/6166/files/bijok.pdf
    • https://cdn.shopify.com/s/files/1/0436/6968/4377/files/unsolicited_business_proposal_sample.pdf
    • https://cdn.shopify.com/s/files/1/0429/6487/7471/files/56353031764.pdf
    • https://cdn.shopify.com/s/files/1/0430/2897/1681/files/kelijerok.pdf
    • https://cdn.shopify.com/s/files/1/0440/5487/2214/files/webpage_to_chrome_plugin.pdf
    • https://cdn.shopify.com/s/files/1/0435/4398/6335/files/81811676091.pdf
    • https://cdn.shopify.com/s/files/1/0433/2892/9960/files/25484178754.pdf
    • https://cdn.shopify.com/s/files/1/0437/6294/2113/files/fuvazizovuruxuxisixizi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9154/2681/files/4988047420.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_off0000841c.bin
55f6d002bdf29d4464f8a47a8993603c2a821ed4090a5ce2cfbed27d7a394f97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x841C 5388 bytes
font_01_sfnt_off0000964c.bin
e99f0cf8b388fe009fe584a32b98fd2aa2f09c01a64a5f6b48f9701eede836a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x964C 12992 bytes
font_02_sfnt_off0000bf6e.bin
84d5bd19c210eb3b73ecc14096ab1e56fdfb5b80ce7ba4f0052c67c0c2b02727		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBF6E 16060 bytes

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