Malicious PDF — malware analysis report

Static analysis result for SHA-256 b887dab99c67f432…

MALICIOUS

PDF

81.9 KB Created: 2020-08-11 21:21:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a59dfd86c6001c1b55387e72a92c464 SHA-1: cda210e54e13c697ac89cee4d5799c5594a7ca47 SHA-256: b887dab99c67f432fdb844175dab50550532f5fe8dc219a1d1a178fd747b9546
128 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link redirects to known malicious infrastructure at ttraff.ru. The document body, though heavily obfuscated, contains the target URL, suggesting a lure to a malicious site. The presence of a link farm and a malicious redirector indicates an attempt to drive traffic to potentially harmful content.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.ru/wb?keyword=separation%20and%20storage%20of%20blood%20components%20pdf
    • http://files.curtissuttonpr.com/uploads/1/3/0/7/130775728/wenazu.pdf
    • http://files.austinfoot-ecology.com/uploads/1/3/0/8/130874474/7957344.pdf
    • http://files.kickitsocial.net/uploads/1/3/1/3/131384709/mikakas.pdf
    • http://files.spacetigertattoos.com/uploads/1/3/0/7/130739951/movojetinodot.pdf
    • https://cdn.shopify.com/s/files/1/0429/4131/7276/files/pleural_mesothelioma.pdf
    • https://cdn.shopify.com/s/files/1/0432/6352/5029/files/bobafomivuzofidapejebo.pdf
    • https://cdn.shopify.com/s/files/1/0432/2145/0914/files/55584049105.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51025654711.pdf
    • https://cdn.shopify.com/s/files/1/0433/4521/5656/files/54269375313.pdf
    • https://cdn.shopify.com/s/files/1/0432/6657/2441/files/first_aid_step_3_4th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0432/9675/1771/files/63669449532.pdf
    • https://cdn.shopify.com/s/files/1/0437/4292/0865/files/.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bafewemuwidizisaj.pdf
    • https://cdn.shopify.com/s/files/1/0428/3754/1031/files/21285885014.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_off0000fcd2.bin
e589716b32459ff23ef096526f9ae2be2121beaca9629d38932ab76b02055a8b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFCD2 5716 bytes
font_01_sfnt_off00011022.bin
f739d6263a4466aa7a8f951d8e97339bc327c59bf6c15b62197562fe9409caa4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11022 13184 bytes

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