Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0672dda8e996caa…

MALICIOUS

PDF

47.5 KB Created: 2020-08-20 11:54:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9d8bdf96be097f9b18d388e15260e6a0 SHA-1: 3d8d2f437a730d497a8e9d898e1f86ac12d632cd SHA-256: c0672dda8e996caab351f655ab9fa1b7d1012b45dc5325b94dff0f9181ede2ab
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, disguised as a 'love bird care sheet'. This redirector likely leads to a malicious payload. The PDF also contains a large number of links to other PDFs hosted on Shopify, which is a common tactic for SEO poisoning and distributing malicious content. The ML classifier strongly flagged this PDF as malicious.

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=love+bird+care+sheet
    • http://files.perfectpartycakes.com/uploads/1/3/1/1/131164520/4515258.pdf
    • http://files.kyammo.com/uploads/1/3/2/6/132680808/mogefadomij-xisiferiwidaxo-kivojadene.pdf
    • http://jejarikim.231fusion.com/uploads/1/3/0/7/130775840/74d371b09.pdf
    • http://files.hordlevoluntarycare.org/uploads/1/3/0/8/130874413/zoladamalija.pdf
    • https://cdn.shopify.com/s/files/1/0429/1385/7692/files/83762304807.pdf
    • https://cdn.shopify.com/s/files/1/0433/9744/7836/files/nonprofit_board_of_directors_job_description.pdf
    • https://cdn.shopify.com/s/files/1/0437/5812/5207/files/ranuposu.pdf
    • https://cdn.shopify.com/s/files/1/0429/2821/0086/files/bioconjugate_techniques_free.pdf
    • https://cdn.shopify.com/s/files/1/0429/1349/7247/files/public_speaking_definition.pdf
    • https://cdn.shopify.com/s/files/1/0431/8376/7713/files/ketonet.pdf
    • https://cdn.shopify.com/s/files/1/0428/4973/0727/files/jaxesutujajufofirog.pdf
    • https://cdn.shopify.com/s/files/1/0429/1559/4393/files/sebonoko.pdf
    • https://cdn.shopify.com/s/files/1/0427/4946/0636/files/behavioral_reasoning_theory.pdf
    • https://cdn.shopify.com/s/files/1/0435/8999/2616/files/fexamulipurilexija.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_off00007009.bin
57c5a120f406dcdc66e013ef45f929a5b2948cab94f8b507717e0cf5eab1f19c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7009 3516 bytes
font_01_sfnt_off00007c92.bin
9b1a3c4d682ae9d3ce11bb1c939cf2f386ae68ed8163a0cc94163ba96a9c12db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C92 5136 bytes
font_02_sfnt_off00008e03.bin
97eba3fa3bdf49efbf7028a88ec25deacc2c19e932a04b91c93b90376ee36775		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E03 10288 bytes

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