Malicious PDF — malware analysis report

Static analysis result for SHA-256 e96336c2f89fcc6f…

MALICIOUS

PDF

47.7 KB Created: 2020-08-18 20:24:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: be2128ebda1c4f066431e6cc5ad36887 SHA-1: 445193243a77bb050b776f4e934bcd358158e6b2 SHA-256: e96336c2f89fcc6fda6244bf81a4b3986380288b3ccb32a92bd20354d00e1044
158 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.cc). This indicates a link farm strategy designed to lure users to malicious infrastructure. The embedded JavaScript and ML classifier further support the malicious nature of the document.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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=klavuu+sheet+mask+review
    • http://files.encorewarrington.org/uploads/1/3/0/8/130813866/jamot.pdf
    • http://files.bainbridge-ny-rotary.com/uploads/1/3/0/8/130873829/9573480.pdf
    • http://mifesawi.stephenkozan.com/uploads/1/3/1/4/131483138/3451352.pdf
    • http://files.normanlegrey.com/uploads/1/3/0/7/130774990/bexada.pdf
    • https://cdn.shopify.com/s/files/1/0431/1184/1949/files/latetina.pdf
    • https://cdn.shopify.com/s/files/1/0437/6759/5165/files/chunkzz_malayalam_full_movie_720p.pdf
    • https://cdn.shopify.com/s/files/1/0437/1313/4757/files/bapelonipedubelikasaged.pdf
    • https://cdn.shopify.com/s/files/1/0432/1030/9787/files/business_meeting_agenda.pdf
    • https://cdn.shopify.com/s/files/1/0432/1892/7778/files/13788443494.pdf
    • https://cdn.shopify.com/s/files/1/0430/7949/9940/files/malezinexaniridil.pdf
    • https://cdn.shopify.com/s/files/1/0430/0426/4601/files/bootstrap_datepicker_3.pdf
    • https://cdn.shopify.com/s/files/1/0436/9140/9561/files/teddy_pendergrass_torrents.pdf
    • https://cdn.shopify.com/s/files/1/0431/7321/6411/files/39592438038.pdf
    • https://cdn.shopify.com/s/files/1/0430/7946/7170/files/wonusapokojifazizoraroje.pdf
    • https://cdn.shopify.com/s/files/1/0433/2689/8344/files/40585055812.pdf
    • https://cdn.shopify.com/s/files/1/0435/4677/1607/files/30344642912.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_off0000675e.bin
e21b326c050f7d9aa2328318875b14e5a0958386bc880affe3f7f57ab9e0f779
pdf-font-stream PDF embedded font (sfnt) at offset 0x675E 5108 bytes
font_01_sfnt_off000078ab.bin
faa3d7e2a08be5fd32fadcf5301ece3d0a62c7c0e7733972447b1fae85a5b00f
pdf-font-stream PDF embedded font (sfnt) at offset 0x78AB 10256 bytes
font_02_sfnt_off00009bf8.bin
c103817fc070fca9a9591fe9d66b30e7fada55352f065963be3f70cb6ab9e90c
pdf-font-stream PDF embedded font (sfnt) at offset 0x9BF8 16320 bytes