Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7d23ed46747cf5b…

MALICIOUS

PDF

53.7 KB Created: 2020-08-12 21:33:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aea7f169a8edb7dd62344b6111dd2b06 SHA-1: 821dc0d088f7e063001812a94a2d17eb3502f4f2 SHA-256: c7d23ed46747cf5b35ae71a317a2e7c65468161549b96341c03d59c89b6f8f6e
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wb?keyword=las%20cruces%20sobre%20el%20agua%20novela%20completa%20pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, contains a similar URL. The primary intent appears to be redirecting the user to malicious infrastructure, likely for further exploitation or credential harvesting.

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.com/wb?keyword=las%20cruces%20sobre%20el%20agua%20novela%20completa%20pdf
    • http://jaxoditaj.harmonythatmatters.com/uploads/1/3/1/4/131482976/b54a9846995.pdf
    • http://dasuvif.hummingbirdchicago.com/uploads/1/3/0/7/130776445/dalelexametamil.pdf
    • http://files.whwrestling.com/uploads/1/3/0/8/130873717/tigetozejesevuj-kevoxizolisefug-bofofumuzu-danazinabu.pdf
    • http://files.forsythsfrostedfancies.com/uploads/1/3/1/3/131380337/kipunukolorixiligam.pdf
    • https://cdn.shopify.com/s/files/1/0433/2909/3800/files/belidifubizobozuxanivax.pdf
    • https://cdn.shopify.com/s/files/1/0434/0970/3062/files/5917379995.pdf
    • https://cdn.shopify.com/s/files/1/0437/2630/7480/files/faxitelit.pdf
    • https://cdn.shopify.com/s/files/1/0429/1824/8601/files/80607127373.pdf
    • https://cdn.shopify.com/s/files/1/0436/9298/2427/files/58060082660.pdf
    • https://cdn.shopify.com/s/files/1/0431/8678/2369/files/ziterozeniradofegosalere.pdf
    • https://cdn.shopify.com/s/files/1/0431/6856/3355/files/bejofufuvozefe.pdf
    • https://cdn.shopify.com/s/files/1/0438/0796/5341/files/oxford_english_dictionary_archive._org.pdf
    • https://cdn.shopify.com/s/files/1/0429/7955/7529/files/mifajugitateturegusirox.pdf
    • https://cdn.shopify.com/s/files/1/0435/9408/8611/files/19142940976.pdf
    • https://cdn.shopify.com/s/files/1/0433/2588/2518/files/edit_documents_adobe.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_off00008af7.bin
2865e7baf948dad665c6444796ca384115bd4b2b4fd1fe86d29b5d3d3d6405bf
pdf-font-stream PDF embedded font (sfnt) at offset 0x8AF7 1604 bytes
font_01_sfnt_off0000931a.bin
5ae4e6849271bae3f0c7c64819e3dbd11a4ea105e93dd53cbc1002ee40ec59b9
pdf-font-stream PDF embedded font (sfnt) at offset 0x931A 5616 bytes
font_02_sfnt_off0000a61b.bin
d48f0a3a280f706ae8c12587e030f1bc9f273208a4d766ecd0e2b88515acb7d3
pdf-font-stream PDF embedded font (sfnt) at offset 0xA61B 10252 bytes