Malicious PDF — malware analysis report

Static analysis result for SHA-256 437dfc14da51c17d…

MALICIOUS

PDF

45.5 KB Created: 2020-09-17 16:28:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 039ac097359ff07e5629c1182ac968f6 SHA-1: ce37ecb8c9f2610866e6118c75aea331ae89ce35 SHA-256: 437dfc14da51c17d2dc2d288242ce405e90c3bdeffb1539bf65ed18c93b73314
150 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as a free download for 'Deadpool classic vol 1 pdf free download'. The primary malicious URL, https://ttraff.com/wix?keyword=deadpool+classic+vol+1+pdf+free+download, is a known malicious redirector. The document body is heavily obfuscated, but the presence of numerous embedded links and the critical heuristic firings strongly indicate a social engineering attempt to redirect users to malicious content.

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=deadpool+classic+vol+1+pdf+free+download
    • http://files.esuzanne.com/uploads/1/3/0/9/130968972/60398.pdf
    • http://files.arealisticplan.com/uploads/1/3/2/6/132696111/a2c8019e70b3f.pdf
    • https://cdn.shopify.com/s/files/1/0430/6498/3703/files/31806220560.pdf
    • https://cdn.shopify.com/s/files/1/0431/6826/8448/files/60542908640.pdf
    • https://cdn.shopify.com/s/files/1/0431/3694/2231/files/10681899844.pdf
    • https://c96d87c1-7cc2-4550-b507-94493d2ac5ed.filesusr.com/ugd/941881_63d94045ccd94472bf271f2a6978aba8.pdf?index=true
    • https://9e0b15eb-6194-4cb6-92c1-ba5e36b1b136.filesusr.com/ugd/4b874d_4c6c98fba96b496baedb2ed8381a05c6.pdf?index=true
    • https://605d5da9-4bb5-4883-a0f4-2781416bdca0.filesusr.com/ugd/ac1638_fbb6d87fdcf14ae5b692cbe5e0848fcf.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0430/9309/8660/files/lutotoxosuj.pdf
    • https://cdn.shopify.com/s/files/1/0478/7224/5926/files/biology_benchmark_answers.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_off000065d1.bin
6fc27f497e630c247c16d2f36e1226552dd01ade363d1d4bc026f729d0ea4ef2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65D1 5060 bytes
font_01_sfnt_off00007728.bin
7d904b4a395332547265854cf6dd8ad85c0ac7f63a694428be6a0d70927fb561		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7728 10540 bytes
font_02_sfnt_off00009b21.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B21 4324 bytes

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