Malicious PDF — malware analysis report

Static analysis result for SHA-256 1aee2d51ac630dbb…

MALICIOUS

PDF

46.4 KB Created: 2020-08-20 02:57:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9a92390df2b8fb7a89cb2b49042fff84 SHA-1: cc34536f2810ad194f576b2537c8709b1fa0d29f SHA-256: 1aee2d51ac630dbb9990383a48e1def82672bafc1a8e21bbeaf4c318b7c69888
150 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one specifically pointing to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The primary malicious URL identified is https://ttraff.com/pify?keyword=routing+protocols+pdf, which is likely used to redirect the user to a further malicious destination. The document body is heavily obfuscated and contains embedded URLs, further supporting the malicious intent.

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=routing+protocols+pdf
    • http://jopogeb.saintgerardcircle.com/uploads/1/3/0/7/130775403/cac92482.pdf
    • http://nurobo.healingwithheaven.com/uploads/1/3/1/4/131406344/vujoxalidososax.pdf
    • http://pomolupe.deuceswildcarshow.com/uploads/1/3/0/7/130740080/86673.pdf
    • http://files.907grill.com/uploads/1/3/1/4/131438676/025304d894.pdf
    • https://cdn.shopify.com/s/files/1/0447/3936/2970/files/seismic_data_acquisition_processing_and_interpretation.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rewosegukedisupagur.pdf
    • https://cdn.shopify.com/s/files/1/0435/7606/6207/files/mivazozividanewifetagomo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0579/5752/files/98304489597.pdf
    • https://cdn.shopify.com/s/files/1/0432/7895/8758/files/gabasuxarupu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4939/4071/files/75037385456.pdf
    • https://cdn.shopify.com/s/files/1/0433/1008/8360/files/wexiwujal.pdf
    • https://cdn.shopify.com/s/files/1/0436/4071/7462/files/20889891944.pdf
    • https://cdn.shopify.com/s/files/1/0448/1590/9026/files/sql_server_2020_edition_comparison.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_off00007a25.bin
932f3448a47b0adaa2d2a0d07615ecd365bd415e12d33a431c371d683ccd7e32		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A25 5120 bytes
font_01_sfnt_off00008baa.bin
561f9e46dd1938ab8b1c0b09880b8a3094d129a68cb3b958da3d7c1184a8ae85		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BAA 9764 bytes

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