Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecfa4be8ff96d68b…

MALICIOUS

PDF

39.6 KB Created: 2020-07-16 03:41:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 041a98a3eb880c9571ac41c03b20fadb SHA-1: 1bcc59e954faedae0cc00da86ba004c3fa4831f3 SHA-256: ecfa4be8ff96d68b3cad07f3a13f36ff6a90f93a80baaa850519c41deb8005f0
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, suggests a lure related to a "Kenneth cole touch screen watch manual". The presence of a link farm and a critical heuristic firing for a malicious redirector strongly indicates a phishing or scam attempt. No scripts were extracted from this sample.

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/wb?keyword=kenneth%20cole%20touch%20screen%20watch%20manual
    • http://files.vancouvermermaid.ca/uploads/1/3/0/7/130776176/85d673715a18205.pdf
    • http://files.beso.co.nz/uploads/1/3/2/7/132740682/a3d08262ae3.pdf
    • http://files.alive-events.com/uploads/1/3/0/7/130775505/9987633.pdf
    • http://files.grandmasquilthouse.com/uploads/1/3/0/8/130813458/nijavovejibuzid_wozefe_dopukiluzir.pdf
    • http://files.westaucklandcadets.com/uploads/1/3/2/7/132740564/najumo.pdf
    • http://files.copelcommunications.com/uploads/1/3/2/6/132695629/sekanufaf.pdf
    • http://files.marketmovesmatt.com/uploads/1/3/0/8/130874629/nuvigure-bufagejiv.pdf
    • http://files.winnipeggroundschool.com/uploads/1/3/2/6/132695418/vekeronuvakigowopad.pdf
    • http://files.soulhealingcollegeparklanham.com/uploads/1/3/1/3/131379761/tekagegujemuwenika.pdf
    • http://files.winnipeggrou
    • https://sizamivizu.files.wordpress.com/2020/07/dirofinit.pdf
    • https://xefupixebi.files.wordpress.com/2020/07/44820726267.pdf
    • https://ruxurogizipo.files.wordpress.com/2020/07/60399429417.pdf
    • https://fokovuzoviva.files.wordpress.com/2020/07/vunigusiwazek.pdf
    • https://tejunif.files.wordpress.com/2020/07/44532735339.pdf
    • https://cdn.shopify.com/s/files/1/0427/3831/9527/files/filepitomimimifomapo.pdf
    • https://cdn.shopify.com/s/files/1/0430/8385/8073/files/85486843086.pdf
    • https://cdn.shopify.com/s/files/1/0433/3273/1038/files/74889424849.pdf
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/pobaxidavabixobupananagu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/31321710084.pdf
    • https://cdn.shopify.com/s/files/1/0431/5525/9560/files/67534629505.pdf
    • https://cdn.shopify.com/s/files/1/0431/8094/9658/files/41891539635.pdf
    • https://cdn.shopify.com/s/files/1/0427/5562/1031/files/5378026295.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_off00005ee7.bin
ca6b5c17c483bd4e2f765356a2f8e75cbdbc36b403b928edfc61c632633a5d64
pdf-font-stream PDF embedded font (sfnt) at offset 0x5EE7 4936 bytes
font_01_sfnt_off00006f94.bin
6b49d53d6fa224846e181d8f175a8e94e505a2195ea60ae88f06e4a5dcd0591e
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F94 9748 bytes