Malicious PDF — malware analysis report

Static analysis result for SHA-256 9199914d36486d2d…

MALICIOUS

PDF

41.7 KB Created: 2020-08-17 05:11:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a58a147c118369f0ec7ae72133aab9b3 SHA-1: 7f72bebc313596bc1105931da44333e30754f401 SHA-256: 9199914d36486d2d56729855ae3772d754b115d8fa4d0c630f0647bf51e748e2
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as a sample email for an informational interview. The PDF also functions as a link farm, directing users to numerous other PDFs hosted on cdn.shopify.com and other domains. The ML classifier strongly indicates maliciousness, and the overall structure suggests a phishing or redirection attempt.

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=request+for+informational+interview+email+sample
    • http://files.nickirutledgephotography.com/uploads/1/3/2/7/132740978/xotakimasajobe-xogobufef-gizujixekavukis.pdf
    • http://gavitos.lorisen.com/uploads/1/3/1/3/131384481/7e75956cb45a2c.pdf
    • https://cdn.shopify.com/s/files/1/0431/5830/6965/files/lubajeledibot.pdf
    • https://cdn.shopify.com/s/files/1/0432/0156/0737/files/romasuguniripojubek.pdf
    • https://cdn.shopify.com/s/files/1/0430/5652/9565/files/17477537294.pdf
    • https://cdn.shopify.com/s/files/1/0431/8108/0738/files/sukodabafo.pdf
    • https://cdn.shopify.com/s/files/1/0431/2806/2109/files/64677174448.pdf
    • https://cdn.shopify.com/s/files/1/0430/0318/3258/files/58568805650.pdf
    • https://cdn.shopify.com/s/files/1/0429/0258/5500/files/91995214052.pdf
    • https://cdn.shopify.com/s/files/1/0437/7798/2626/files/fuxutosarorizusevemam.pdf
    • https://cdn.shopify.com/s/files/1/0434/0131/4454/files/lizijob.pdf
    • https://cdn.shopify.com/s/files/1/0431/9969/2958/files/jufodelefexowokuvipel.pdf
    • https://cdn.shopify.com/s/files/1/0432/4166/8763/files/xixutalasav.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_off00006652.bin
37b0f12dfd24d19bd42eccb4772ffdd86fd5e04e6b19401b0bbd8c2d7f9aff87		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6652 5332 bytes
font_01_sfnt_off0000787b.bin
cd1ca880e8b0817292010f8d8e80d2351bc8c072e16a7604d49015e426ae8f1a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x787B 9876 bytes

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