Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3f6369128618842…

MALICIOUS

PDF

104.4 KB Created: 2020-08-01 14:48:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b5495a8a5d1bbb2481e5b2efce99061f SHA-1: f7c20e838fe46ba2a0abc54a64df956252a3894e SHA-256: e3f63691286188424b66fa8b4c2797a1d28910745d514dfab173060b06f4fce3
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=amagi+brilliant+park+episode+13'. This URL is likely used to direct the user to a malicious site. The document body, though heavily obfuscated, contains the same lure text, reinforcing the social engineering aspect. The presence of numerous embedded links, many hosted on cdn.shopify.com, suggests a link farm or distribution mechanism for the malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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=amagi+brilliant+park+episode+13
    • http://files.muumrose.com/uploads/1/3/0/8/130813111/d62d38c.pdf
    • http://files.wls-phd.com/uploads/1/3/1/6/131637409/buxof.pdf
    • http://files.iowacollegemediaassociation.com/uploads/1/3/1/1/131164556/2eaed130e15c.pdf
    • https://cdn.shopify.com/s/files/1/0431/4028/4577/files/fusalexudutim.pdf
    • https://cdn.shopify.com/s/files/1/0431/4536/3616/files/17084859963.pdf
    • https://cdn.shopify.com/s/files/1/0428/4756/8039/files/89291715457.pdf
    • https://cdn.shopify.com/s/files/1/0433/9020/6117/files/guxipafujoxaj.pdf
    • https://cdn.shopify.com/s/files/1/0428/5906/9599/files/68732744580.pdf
    • https://cdn.shopify.com/s/files/1/0428/4553/6419/files/goxinerifonudanarajepunap.pdf
    • https://cdn.shopify.com/s/files/1/0430/0872/1045/files/refaxitaxikof.pdf
    • https://cdn.shopify.com/s/files/1/0431/0463/2992/files/fable_anniversary_silver_keys.pdf
    • https://cdn.shopify.com/s/files/1/0431/4087/4408/files/57916716245.pdf
    • https://cdn.shopify.com/s/files/1/0433/1647/8110/files/8074135966.pdf
    • https://cdn.shopify.com/s/files/1/0431/3251/8554/files/15888006590.pdf
    • https://cdn.shopify.com/s/files/1/0428/5857/8086/files/95350745984.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/s/files/1/0431/4087/4408/files/

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bb8a.bin
00accdda73ce677714f5492813049d7bf18876cfdb64823e3185a24094f1f933		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBB8A 41848 bytes
font_01_sfnt_off00013c9f.bin
801d164342a510c1176bfdee559191e2fe812d688287aea461daab9e8a2ee74e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13C9F 5476 bytes
font_02_sfnt_off00014f1e.bin
2ffa0c08dc9f7196df30ff7af3841a548c49975d1352bc268ee8b31f3cde6606		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14F1E 19928 bytes
font_03_sfnt_off0001836e.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1836E 4324 bytes

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