Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d131b599cc324e3…

MALICIOUS

PDF

33.2 KB Created: 2020-08-22 13:51:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b60568d4f00c59e2103f2df8f8740633 SHA-1: 3ef8429959cb3850931ebbe08edd998f6614267c SHA-256: 4d131b599cc324e3fafee6be195bfdd19227d4f23bda4cdc7261f6cee2d3765c
150 Risk Score

Malware Insights

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

The PDF was flagged for containing a malicious redirector link and a large number of external links, suggesting a link farm. The primary malicious URL identified is https://ttraff.com/pify?keyword=frome+market+report+friday. The document body contains garbled text but includes the same URL, reinforcing its role in the attack. No scripts were extracted, but the structure and embedded links strongly indicate a phishing or malware distribution attempt.

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=frome+market+report+friday
    • http://files.volksmusikdj.com/uploads/1/3/2/7/132712080/raxitekelod.pdf
    • http://files.mindthegapprograms.com/uploads/1/3/1/4/131408062/9890966.pdf
    • http://files.norcalconcrete.com/uploads/1/3/0/7/130738894/kovogirifuvi.pdf
    • https://cdn.shopify.com/s/files/1/0431/1334/9273/files/27438854869.pdf
    • https://cdn.shopify.com/s/files/1/0433/0982/6213/files/99190631865.pdf
    • https://cdn.shopify.com/s/files/1/0432/2151/6445/files/58917460269.pdf
    • https://cdn.shopify.com/s/files/1/0429/4692/0615/files/templateref_vs_viewcontainerref.pdf
    • https://cdn.shopify.com/s/files/1/0433/5144/1560/files/98904595548.pdf
    • https://cdn.shopify.com/s/files/1/0428/2816/9382/files/36798544982.pdf
    • https://cdn.shopify.com/s/files/1/0434/3637/6214/files/22783176952.pdf
    • https://cdn.shopify.com/s/files/1/0438/5538/0645/files/zawaligi.pdf
    • https://cdn.shopify.com/s/files/1/0428/8679/1334/files/56991623438.pdf
    • https://cdn.shopify.com/s/files/1/0431/4886/9786/files/90534668941.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_off00004655.bin
0f0f152ddc8579f36c0945904212fb030950f896181ce5f744b2f3a60d0d3b7a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4655 5100 bytes
font_01_sfnt_off000057a4.bin
a9fabaad96830b9f22ff7c2909483b4c8ed3864c102c6a4e3279dfa259786bba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57A4 9580 bytes

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