Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a94536d4f683876…

MALICIOUS

PDF

45.6 KB Created: 2020-08-26 12:16:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bb0ff999598f935743ea7dbe6cb32b9b SHA-1: 96a1a0f22afb24a22cc70c58888f66d003aa3778 SHA-256: 1a94536d4f683876870c864461808f538f3c76540ed3e0f9dc04c6ae463fb6e9
150 Risk Score

Malware Insights

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

The PDF contains a prominent link disguised as a Windows 10 update download, which redirects to a malicious URL. This URL is part of a link farm designed to lure users into downloading potentially malicious content. The document body and heuristics strongly indicate a social engineering tactic to trick users into clicking the malicious link.

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.ru/pify?keyword=feature+update+windows+10+1809+downl
    • http://raxewadu.visualsofjessicasolis.com/uploads/1/3/1/8/131856666/vomimuridop-tarovoga-dufuzu.pdf
    • https://cdn.shopify.com/s/files/1/0430/1206/3391/files/simagenor.pdf
    • https://cdn.shopify.com/s/files/1/0462/7618/2165/files/gloomhaven_scoundrel_level_9_guide.pdf
    • https://cdn.shopify.com/s/files/1/0436/0998/1085/files/48408276227.pdf
    • https://cdn.shopify.com/s/files/1/0431/4526/5318/files/24278860480.pdf
    • https://cdn.shopify.com/s/files/1/0429/1140/0102/files/57511773120.pdf
    • https://cdn.shopify.com/s/files/1/0439/3091/0875/files/tufoxabilepalel.pdf
    • https://cdn.shopify.com/s/files/1/0432/9157/4430/files/41208086243.pdf
    • https://cdn.shopify.com/s/files/1/0428/8702/0703/files/11875526605.pdf
    • https://cdn.shopify.com/s/files/1/0430/5505/5002/files/bumomataze.pdf
    • https://cdn.shopify.com/s/files/1/0432/3439/4276/files/79801209205.pdf
    • https://cdn.shopify.com/s/files/1/0433/9784/1063/files/givisipurerirapivez.pdf
    • https://cdn.shopify.com/s/files/1/0440/9229/3272/files/41651520786.pdf
    • https://cdn.shopify.com/s/files/1/0430/7045/5965/files/75806036764.pdf
    • https://cdn.shopify.com/s/files/1/0435/8553/6161/files/98501701237.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_off000066fa.bin
6b1886100909a5777bb30fc7b7be00bba8ed48ad5f5b392b7a0cb4783a0739ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66FA 3016 bytes
font_01_sfnt_off000071b4.bin
b9ea1f546b6ebf6ced733d8831d6b3b35e69fb5070fd8d1e629a6a1e0f713af4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71B4 5544 bytes
font_02_sfnt_off000084a9.bin
22deeb1ebfa37437fd19f91cf39dfa2c93cd793a5342f3892e5e87f5c7da4132		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84A9 10712 bytes

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