Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb6864668b5747e2…

MALICIOUS

PDF

41.8 KB Created: 2020-08-01 12:07:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 14384b86960e7ef217aecbde265a0845 SHA-1: 397392791282a29aa0db1d877a80445f45284015 SHA-256: eb6864668b5747e20f2db7485111b54b488bb9e2ec617f8f8e9154cd54bac443
128 Risk Score

Malware Insights

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

The PDF contains a prominent link that, when clicked, redirects to a malicious URL (ttraff.cc) disguised as a download for a "Nikon d70 manual". This URL is flagged as a malicious redirector. The document also contains a large number of external PDF links, many hosted on Shopify, suggesting a link farm or SEO poisoning attempt to drive traffic to malicious sites. The presence of a "download button" heuristic further supports the lure-based attack pattern.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=nikon+d70+manual
    • http://files.stephcookpt.com/uploads/1/3/2/6/132681993/munitowekorara.pdf
    • http://files.ritaparadisfineart.com/uploads/1/3/1/3/131383664/gevajopekavi.pdf
    • http://files.contigodevelopment.com/uploads/1/3/2/3/132303219/resowewaxaronivipid.pdf
    • https://cdn.shopify.com/s/files/1/0430/8199/0304/files/83477228128.pdf
    • https://cdn.shopify.com/s/files/1/0434/4155/3575/files/vonulixidumaradomanuwode.pdf
    • https://cdn.shopify.com/s/files/1/0429/9236/9823/files/3716039392.pdf
    • https://cdn.shopify.com/s/files/1/0435/9605/4690/files/biwujusakirabipowonav.pdf
    • https://cdn.shopify.com/s/files/1/0437/7139/6257/files/dalipulalaxesil.pdf
    • https://cdn.shopify.com/s/files/1/0430/3136/3747/files/60719627027.pdf
    • https://cdn.shopify.com/s/files/1/0429/4619/9711/files/xufudugevazaboguzep.pdf
    • https://cdn.shopify.com/s/files/1/0438/5911/6182/files/96799105464.pdf
    • https://cdn.shopify.com/s/files/1/0434/0921/1549/files/jagekabokuxawos.pdf
    • https://cdn.shopify.com/s/files/1/0433/9236/8798/files/notobudoxisoz.pdf
    • https://cdn.shopify.com/s/files/1/0432/3137/9624/files/6742421310.pdf
    • https://cdn.shopify.com/s/files/1/0432/1381/5966/files/92631021584.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/94323725826.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/
    • https://cdn.shopify.com/s/files/1/0438/5911/618

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000664b.bin
91947a7cc0f6009862c721ed40d8cf6f124054d526c83ce248a7d4bd4b0c15fb
pdf-font-stream PDF embedded font (sfnt) at offset 0x664B 4952 bytes
font_01_sfnt_off00007720.bin
f70443bd657db4f1b04cb485e78133f6184cc6c5c83c32245e9edfc5efd32c94
pdf-font-stream PDF embedded font (sfnt) at offset 0x7720 10300 bytes