Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6712f872d650f3d…

MALICIOUS

PDF

55.4 KB Created: 2020-08-29 15:51:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0497919aed3794dfb12585e17f69584e SHA-1: f8474c226d4b1105da1eb13bc5aad4f8b6fd3d69 SHA-256: a6712f872d650f3d3b60ad805a6a3f72d9a684db906953593b9721221ac05c1c
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wix?keyword=norton+anthology+of+western+music+pd'. This URL is presented within the document body, suggesting a phishing or scam attempt to redirect the user to a malicious site. The PDF also contains a large number of external links, many of which are benign Shopify links, but the presence of the malicious redirector is the primary indicator of compromise.

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/wix?keyword=norton+anthology+of+western+music+pd
    • https://cdn.shopify.com/s/files/1/0438/1864/7709/files/jogobuzopobizaranoganadil.pdf
    • https://cdn.shopify.com/s/files/1/0433/0989/1742/files/10838733148.pdf
    • https://cdn.shopify.com/s/files/1/0434/0373/9294/files/wokirabadujimufiwuve.pdf
    • https://cdn.shopify.com/s/files/1/0434/5144/9504/files/lei_do_simples_nacional.pdf
    • https://cdn.shopify.com/s/files/1/0429/2286/8892/files/functional_communication_training.pdf
    • https://static.usrfiles.com/ugd/b8c837_3a64805a9df64764bac754b31f1b0bff.pdf
    • https://static.usrfiles.com/ugd/b8c837_e24ce86c8fa04a588c867cc4fe658ea9.pdf
    • https://static.usrfiles.com/ugd/b8c837_2f68eb444f0f46489efea14ce3ee0019.pdf
    • https://static.usrfiles.com/ugd/b8c837_2acf9ebf1d844d8f8329617911ad02b5.pdf
    • https://static.usrfiles.com/ugd/9219f8_41ed3d834bb04e0aa37a61c58954201f.pdf
    • https://static.usrfiles.com/ugd/08fe48_13b50a0c6c244547ad3fd0f8d39533a7.pdf
    • https://static.usrfiles.com/ugd/b8c837_881cc323d08a4920bc23ca4f190983e2.pdf
    • https://static.usrfiles.com/ugd/b8c837_15f594087dc04933bad9918a5812b228.pdf
    • https://static.usrfiles.com/ugd/b8c837_07d49d4fb06744a1883f067bfe3d891b.pdf
    • https://static.usrfiles.com/ugd/b8c837_1b1b134a029a4bcb96da76c7124c2d58.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000074ca.bin
f8cc51f4b3ca050f9c7d518931f089e93090348356b9bf5a5c06ac17682e8684		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74CA 5732 bytes
font_01_sfnt_off0000883b.bin
5b39e9209f2f5823ace8c91dcdd9d22e48f67d4c3a8bd5da9fa9055417ac3ba4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x883B 2576 bytes
font_02_sfnt_off000091fa.bin
b8f09666e0962bff6e7d452a2e26249cecc15743870a604b292cc62a2f0e5bcc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x91FA 10492 bytes
font_03_sfnt_off0000b61d.bin
735e795b4d16529a49140ac7f40a22111760e3f1c48d6bea317f9a0d5f86c05c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB61D 16780 bytes

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