Malicious PDF — malware analysis report

Static analysis result for SHA-256 b98065b71612cbc7…

MALICIOUS

PDF

43.2 KB Created: 2020-08-01 08:50:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 063a3dc236726db080251f40c39c4a63 SHA-1: 0458267981be2dc229cb31b7def1fc4ad3277c2c SHA-256: b98065b71612cbc74bdfb68222aa80adf9dbf9e603c596acc1fdb928328dec82
150 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a redirector to a known malicious domain. The document body text and embedded URLs suggest a lure related to 'clicker heroes redeem code', which redirects to a malicious URL. This indicates a phishing or scam attempt designed to lead users to malicious infrastructure.

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=clicker+heroes+redeem+code
    • http://files.biomems-supply.com/uploads/1/3/1/4/131483488/4855115.pdf
    • http://files.teachingenrichmentkids.com/uploads/1/3/2/6/132681476/ac89d2f9.pdf
    • http://files.atangleroutfitters.com/uploads/1/3/0/7/130739747/revasoto.pdf
    • http://files.mimulux.com/uploads/1/3/1/8/131872021/8e1a96fd.pdf
    • https://cdn.shopify.com/s/files/1/0430/6426/2818/files/xunigoxejojomurake.pdf
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/how_to_delete_youtube_playlists.pdf
    • https://cdn.shopify.com/s/files/1/0428/2109/1484/files/bitol.pdf
    • https://cdn.shopify.com/s/files/1/0437/5907/5477/files/90067378012.pdf
    • https://cdn.shopify.com/s/files/1/0428/4815/7859/files/60683067706.pdf
    • https://cdn.shopify.com/s/files/1/0429/6127/2995/files/4581791027.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/43778875991.pdf
    • https://cdn.shopify.com/s/files/1/0432/1991/0811/files/saxalikej.pdf
    • https://cdn.shopify.com/s/files/1/0435/3510/6203/files/51605409389.pdf
    • https://cdn.shopify.com/s/files/1/0429/1385/7692/files/vojenakapodejage.pdf
    • https://cdn.shopify.com/s/files/1/0431/6997/2392/files/79447572344.pdf
    • https://cdn.shopify.com/s/files/1/0427/7580/6119/files/58905645637.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_off00006afd.bin
f5af3b809ea64401620bc30b87d52d6a2fcc094d1f7ea675001c68cf78efe5de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AFD 4936 bytes
font_01_sfnt_off00007b9b.bin
9aa5f013356ec9b30e8d73a2a6abc81f21dfcb8e4613d8d99e0a2787f6b6ea43		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B9B 10704 bytes

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