Malicious PDF — malware analysis report

Static analysis result for SHA-256 afbea7667b617a66…

MALICIOUS

PDF

59.3 KB Created: 2020-07-12 21:11:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4748529112096eafbcfe00d684136c1a SHA-1: 726e7b0618cf40e9cda7d5c72411f8fc173359ab SHA-256: afbea7667b617a668e810d69b3adce22ff9c4b6c4f7c06fe6cd5282dab4f1744
160 Risk Score

Malware Insights

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

The PDF document contains numerous links, including one pointing to a known malicious redirector. The document body text is heavily obfuscated, but the presence of embedded URLs and the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic indicate a phishing or redirection attempt. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic suggests the document may be intended to trick the user into downloading a password-protected archive, likely containing a secondary payload.

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=physical%20science%20college%20textbook%20pdf
    • http://files.jezawilliams.com/uploads/1/3/1/3/131398515/kepatapi_pijuluzute_migemibatof_wowesuretunaj.pdf
    • http://files.alzglassandiron.com/uploads/1/3/1/6/131606638/6729171.pdf
    • http://files.marinapo.com/uploads/1/3/1/3/131378821/7aa1c9ddd44b.pdf
    • http://files.sterritup.com/uploads/1/3/1/4/131406303/memepeg.pdf
    • http://files.mariachristinepericozzi.com/uploads/1/3/1/3/131384024/zivexirerune.pdf
    • http://files.mariachristinepericozzi.com/uploa
    • https://cdn.shopify.com/s/files/1/0432/3885/0724/files/xodopasedusagapo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/74133662670.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30106301206.pdf
    • https://nobijip.files.wordpress.com/2020/07/25507757702.pdf
    • https://zeluvabumi.files.wordpress.com/2020/06/27214930113.pdf
    • https://vorelav760549551.files.wordpress.com/2020/06/tozovidupi.pdf
    • https://cdn.shopify.com/s/files/1/0432/5949/4555/files/34600748018.pdf
    • https://cdn.shopify.com/s/files/1/0433/0441/9478/files/76894218414.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xuwuvedalolavotidexetugom.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/27247465441.pdf
    • https://cdn.shopify.com/s/files/1/0429/2853/7753/files/rapapusesexonafe.pdf
    • https://cdn.shopify.com/s/files/1/0432/2469/4942/files/jamuperedijoza.pdf
    • https://cdn.shopify.com/s/files/1/0430/5226/9717/files/17339214188.pdf
    • https://cdn.shopify.com/s/files/1/0434/8215/3112/files/42081336269.pdf
    • https://cdn.shopify.com/s/files/1/0427/5725/9420/files/pafojatipapoliratafeli.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_off0000a99c.bin
c2f710ff6f67625ad4e470f8240e2485c4571274598232dfaded15b3e95e8e7a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA99C 5484 bytes
font_01_sfnt_off0000bc3b.bin
42ef6186b1860d011f8c03995fddd1cc14ca0cfd9bc9a2c1f83eae9003d5eb9d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBC3B 10252 bytes

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