Malicious PDF — malware analysis report

Static analysis result for SHA-256 a028f8879bf62dd4…

MALICIOUS

PDF

39.2 KB Created: 2020-08-15 22:40:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a31d450af4fcbe1e7073d03f8979897e SHA-1: 70f9b4b4e1721273597b18a3308d65328399ddf2 SHA-256: a028f8879bf62dd4e09875f085f63857d58de1c43f41547bba600b388e2f4df3
150 Risk Score

Malware Insights

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

The PDF contains a deceptive link disguised as a meditation guide, which redirects to a malicious URL. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic and the embedded URL confirm this redirection behavior. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, many hosted on Shopify, suggesting an attempt to distribute malicious content through seemingly benign platforms. The ML_NYX_PDF_MALICIOUS score further supports the malicious nature of the document.

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.cc/pify?keyword=five+minute+guided+meditation+for+anxiety
    • http://files.nanoluge.com/uploads/1/3/0/7/130775583/e7eab6269b5.pdf
    • http://files.jamie-carl-design.com/uploads/1/3/2/7/132711999/5786217.pdf
    • http://files.pfcmooremess.com/uploads/1/3/0/7/130776072/65264bc54.pdf
    • https://cdn.shopify.com/s/files/1/0440/6942/1206/files/fuxozetipijofo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9386/9223/files/fulotikevupedubi.pdf
    • https://cdn.shopify.com/s/files/1/0429/6730/2295/files/32753829471.pdf
    • https://cdn.shopify.com/s/files/1/0435/8189/8913/files/fizotutaxumejepovozimuzen.pdf
    • https://cdn.shopify.com/s/files/1/0434/6108/3301/files/72408504846.pdf
    • https://cdn.shopify.com/s/files/1/0433/3443/4969/files/arduino_led_cube_projects.pdf
    • https://cdn.shopify.com/s/files/1/0452/5775/2733/files/encyclopedia_britannica_vk.pdf
    • https://cdn.shopify.com/s/files/1/0431/7036/5589/files/movimiento_rectilineo_uniforme_y_uniformemente_variado.pdf
    • https://cdn.shopify.com/s/files/1/0433/6618/7176/files/arrayutils_java_import.pdf
    • https://cdn.shopify.com/s/files/1/0428/2921/7958/files/lafepino.pdf
    • https://cdn.shopify.com/s/files/1/0429/1916/6105/files/xejuwidulubelasoruwobibob.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_off00005d2e.bin
ef89ae5540e5e4d0be3d2e6df261524f71dac843bb9364b192fa306237d17050		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D2E 5200 bytes
font_01_sfnt_off00006ed9.bin
3e35b980d3e4670d4e43df116e28f1163a42364725e0883dff575b6fac00e4f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6ED9 9632 bytes

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