Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9e261580b15bcae…

MALICIOUS

PDF

63.7 KB Created: 2020-08-12 17:29:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 047c79774f4bd5d476e3a53452e06f2b SHA-1: 411e6842d1e67ece961af190688f352f19690593 SHA-256: d9e261580b15bcae5d368104fbc253bc0ce49055bfb7cdf21593589d19c833fd
150 Risk Score

Malware Insights

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

The PDF was flagged as malicious due to embedded links pointing to known malicious redirector infrastructure. The primary malicious URL identified is https://ttraff.com/pify?keyword=estrutura+do+texto+expositivo+argumentativo+pdf. This suggests the document is designed to lure users to a harmful destination, likely for phishing or malware distribution. The presence of numerous external PDF links also indicates a link farm strategy, potentially for SEO manipulation or to obscure the final malicious destination.

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.com/pify?keyword=estrutura+do+texto+expositivo+argumentativo+pdf
    • http://files.bkleonardlaw.com/uploads/1/3/1/4/131438282/solekofuj.pdf
    • http://files.lopatswimming.org/uploads/1/3/1/3/131398095/mabanewep.pdf
    • http://files.theitalianweddingband.com/uploads/1/3/0/7/130776603/midod.pdf
    • https://cdn.shopify.com/s/files/1/0432/4609/2443/files/tavatonaripox.pdf
    • https://cdn.shopify.com/s/files/1/0431/4392/1820/files/phonetic_alphabet_with_examples.pdf
    • https://cdn.shopify.com/s/files/1/0437/4121/6919/files/29695902848.pdf
    • https://cdn.shopify.com/s/files/1/0440/7522/1157/files/34550942234.pdf
    • https://cdn.shopify.com/s/files/1/0436/9917/5579/files/zuwulome.pdf
    • https://cdn.shopify.com/s/files/1/0429/2929/1427/files/89155586443.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3750/files/bangla_hadith_book_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0436/7394/4217/files/dusokufiladuxenuzilas.pdf
    • https://cdn.shopify.com/s/files/1/0435/7062/6723/files/los_adventistas_del_septimo_dia_responden_preguntas_sobre_doctrina.pdf
    • https://cdn.shopify.com/s/files/1/0432/2007/4663/files/relifozeregexawosifevem.pdf
    • https://cdn.shopify.com/s/files/1/0431/1593/7948/files/tarot_of_ceremonial_magic.pdf
    • https://cdn.shopify.com/s/files/1/0432/8570/8953/files/voririsomikidak.pdf
    • https://cdn.shopify.com/s/files/1/0434/3142/8248/files/93196168457.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/

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009039.bin
6c20d2438d7729756a16e2b96c2cce5ae894c8edeefcb86fabfcd106bdb5ac57		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9039 5296 bytes
font_01_sfnt_off0000a22c.bin
c8e3d300ff22865a9fbe97e94954f7706af6e5c9064f9a8dd6168cf13de9959e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA22C 12956 bytes
font_02_sfnt_off0000c94f.bin
489b1e54918ea423d4621561963f3d5dd2288bb5546a2c92e1270d4c49a741ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC94F 16816 bytes
font_03_sfnt_off0000e104.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE104 4324 bytes

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