Malicious PDF — malware analysis report

Static analysis result for SHA-256 4641250773f31765…

MALICIOUS

PDF

40.7 KB Created: 2020-08-30 02:40:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a4f49f83387a037b0b7e8005ede893d9 SHA-1: f26be6069d8d90ecad4d14421960943a89ba06c0 SHA-256: 4641250773f3176503d44e72fb250e48f472f14a96ad0bc58d88d8e8dd8ccb50
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The embedded URL points to a redirector, and the document body contains numerous links, many of which are hosted on cdn.shopify.com, suggesting an attempt to obscure the true destination. The primary malicious URL identified is ttraff.cc, which is likely used for phishing or malware delivery.

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/wix?keyword=cuales+son+las+corrientes+psicologicas
    • https://cdn.shopify.com/s/files/1/0437/9063/1064/files/hsbc_credit_card_report_lost_hk.pdf
    • https://cdn.shopify.com/s/files/1/0429/6392/7206/files/18385495962.pdf
    • https://cdn.shopify.com/s/files/1/0432/4638/7362/files/49286752114.pdf
    • https://cdn.shopify.com/s/files/1/0435/6653/0721/files/29942954308.pdf
    • https://cdn.shopify.com/s/files/1/0465/0585/3086/files/79714210869.pdf
    • https://cdn.shopify.com/s/files/1/0437/3456/5025/files/17528058242.pdf
    • https://cdn.shopify.com/s/files/1/0428/4448/7836/files/biotransformation_definition.pdf
    • https://cdn.shopify.com/s/files/1/0430/7556/7777/files/17805761847.pdf
    • https://cdn.shopify.com/s/files/1/0437/6815/2216/files/jutuwamexutewamo.pdf
    • https://cdn.shopify.com/s/files/1/0428/4894/4284/files/wakese.pdf
    • https://cdn.shopify.com/s/files/1/0435/1354/4863/files/37833835566.pdf
    • https://cdn.shopify.com/s/files/1/0432/8760/9497/files/gamin.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_off00005fcc.bin
1d4e238d11d116696fbe970b31cf7c31052379ce02904e5168bf45db67bd1d31		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FCC 5008 bytes
font_01_sfnt_off000070e2.bin
b84066799d8944a2e55c4aaf51109229175c82784db7b4d0e5d62c12597c1a59		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70E2 11064 bytes

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