Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3a04f4e7d47ca56…

MALICIOUS

PDF

46.5 KB Created: 2020-09-20 00:45:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff6343f444fe4feb5ae6c8c00bb541a9 SHA-1: f796576183d83ce8b33f3ccff3e44c906107dfb2 SHA-256: b3a04f4e7d47ca561d3002fe1c35a8f41aaf0935748954b4a12349a84466342e
148 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.link/wix?keyword=bottle+rocket+building'. Additionally, a PDF link farm heuristic indicates the presence of numerous external links, with one example being 'https://12d50a9a-0ab6-4d19-9ab3-62c4b63e7ce8.filesusr.com/ugd/f51585_66f3be6768de422e830a47dbaea20892.pdf?index=true'. The document body, though heavily obfuscated, also contains the redirector URL. These findings suggest a phishing or malware distribution attempt.

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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.link/wix?keyword=bottle+rocket+building
    • http://files.achswritersweek.com/uploads/1/3/0/7/130776206/tawujof-pufoko-witig.pdf
    • http://wotazug.leggsmanufacturing.com/uploads/1/3/2/6/132695584/sedosomelop.pdf
    • http://rubat.escobedosoliz.net/uploads/1/3/0/9/130969762/8274139.pdf
    • http://files.sandstormvault.com/uploads/1/3/0/9/130969505/jarosem.pdf
    • https://12d50a9a-0ab6-4d19-9ab3-62c4b63e7ce8.filesusr.com/ugd/f51585_66f3be6768de422e830a47dbaea20892.pdf?index=true
    • https://b10d6f0d-8631-42b7-aaf7-2f6d824c6560.filesusr.com/ugd/f34823_d370aa75adc942b98600773728f3da12.pdf?index=true
    • https://cb83c146-6c46-4295-a3f6-9576a64d76e3.filesusr.com/ugd/a9248e_b313a6c3c5d646d999d1e7b94f9691ed.pdf?index=true
    • https://fa089e13-cc6c-47b1-8142-d3c158368540.filesusr.com/ugd/bba345_252f44acc165494d95cac258084ecd0b.pdf?index=true
    • https://0a59a602-1978-4cd1-8ae9-e64440e6c6bb.filesusr.com/ugd/824332_de9b79a9353b487794d09fe2f14bb886.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0429/0609/1673/files/fozolokunepodete.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/12729031526.pdf
    • https://cdn.shopify.com/s/files/1/0467/7710/6585/files/45007447280.pdf
    • https://cdn.shopify.com/s/files/1/0437/7640/9751/files/kurib.pdf
    • https://cdn.shopify.com/s/files/1/0433/9852/9191/files/62711887272.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006bc6.bin
6c2245a8e4de63dcba1847d96d341c103f7baa330d91fbc06bc17d914336b3bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BC6 4856 bytes
font_01_sfnt_off00007c56.bin
a8287fe4f00e444f57fa30173c87f081da3a155ea8d3e0028c6b9183b5a2683b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C56 10104 bytes
font_02_sfnt_off00009ef3.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9EF3 4324 bytes

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