Malicious PDF — malware analysis report

Static analysis result for SHA-256 910cdce85bdad9e1…

MALICIOUS

PDF

45.2 KB Created: 2020-08-10 05:47:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e0f218b572ebae791613ce15302db78 SHA-1: aa88562fb93492ebc349d57a41d90de8b872670a SHA-256: 910cdce85bdad9e12a9538844d824b9f9ace7654cfd8cc23d372c2f8be806423
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with the primary URL pointing to a known malicious redirector. The heuristic firings indicate this is a link farm designed to redirect users to malicious infrastructure. The document body, though heavily obfuscated, contains the malicious URL, reinforcing the redirection attempt. No scripts were extracted from this sample.

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=stream+of+consciousness+technique+pdf
    • http://files.nhrealestate.org/uploads/1/3/1/8/131871704/daxanefafason-kubexi-kozagusifizunav.pdf
    • http://files.smsband.org/uploads/1/3/0/8/130813448/7373853.pdf
    • http://files.ufequestrian.com/uploads/1/3/1/3/131381109/8291039.pdf
    • http://files.dominionarchery.com/uploads/1/3/1/4/131453393/fa2f38a1efe4e04.pdf
    • https://cdn.shopify.com/s/files/1/0434/4093/0983/files/83991678876.pdf
    • https://cdn.shopify.com/s/files/1/0434/3991/5164/files/86391279912.pdf
    • https://cdn.shopify.com/s/files/1/0428/8043/4342/files/sokononarigimuvuj.pdf
    • https://cdn.shopify.com/s/files/1/0427/8665/2316/files/87041397743.pdf
    • https://cdn.shopify.com/s/files/1/0434/6842/3330/files/gifamivivajubosukusofuj.pdf
    • https://cdn.shopify.com/s/files/1/0432/2413/7890/files/59688836050.pdf
    • https://cdn.shopify.com/s/files/1/0438/1740/2530/files/tedut.pdf
    • https://cdn.shopify.com/s/files/1/0433/7205/2643/files/xedagij.pdf
    • https://cdn.shopify.com/s/files/1/0433/7631/2471/files/xovarawawulekapidetul.pdf
    • https://cdn.shopify.com/s/files/1/0430/6799/8359/files/xuvepejagara.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_off000062dd.bin
ea633a366259d44a71dc552c9059339123aa979100830f6bf4ca060a216d1d0a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62DD 5472 bytes
font_01_sfnt_off00007538.bin
c23a925d2dac2470e89e629bc0348b225740954384c6433d053d4858e65f6c15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7538 10660 bytes
font_02_sfnt_off000099a0.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x99A0 4324 bytes

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