Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2b98fd1f0a496c0…

MALICIOUS

PDF

59.4 KB Created: 2020-08-06 19:56:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae86b712faa234b83924acbad8e9455d SHA-1: 1061a08772a8d425380e3f467d53cc95855d5cce SHA-256: f2b98fd1f0a496c016cf1d75af416786dede600ac7da92a5de3b10567faa02c6
152 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link that is disguised as a utility for converting PDF to Word documents. This link, 'https://ttraff.cc/pify?keyword=pdf+to+word+document+adobe', is designed to lead users to malicious infrastructure. The PDF also hosts a large number of external links, many pointing to Shopify domains, likely as part of a link farm to improve search engine ranking for 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.cc/pify?keyword=pdf+to+word+document+adobe
    • http://kamevuda.flowyogaclasses.com/uploads/1/3/0/7/130739826/643ae45.pdf
    • http://files.talentlessandoptimistic.co.uk/uploads/1/3/1/6/131606798/7990cea99.pdf
    • http://files.ucfrugby.org/uploads/1/3/0/7/130776205/91542e4685ce4f.pdf
    • http://files.elkhornvalleyhrc.com/uploads/1/3/0/7/130775466/f328c8.pdf
    • https://cdn.shopify.com/s/files/1/0429/9427/0371/files/99142459089.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/motoliwetisebitenusiluva.pdf
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/28097131571.pdf
    • https://cdn.shopify.com/s/files/1/0431/5663/5812/files/nokojagok.pdf
    • https://cdn.shopify.com/s/files/1/0432/0215/0557/files/rezunevizefudebexojeboj.pdf
    • https://cdn.shopify.com/s/files/1/0436/2331/7662/files/7960839631.pdf
    • https://cdn.shopify.com/s/files/1/0429/9515/5105/files/jamugifomobaxin.pdf
    • https://cdn.shopify.com/s/files/1/0429/3269/9292/files/xavozijep.pdf
    • https://cdn.shopify.com/s/files/1/0434/3414/7989/files/vojilavesibapufuwudogi.pdf
    • https://cdn.shopify.com/s/files/1/0435/5797/8273/files/49340413104.pdf
    • https://cdn.shopify.com/s/files/1/0429/8889/6415/files/apex_learning_answers_world_history_semester_2.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_off0000ab5a.bin
23fde820ddc1b4b25c0f37548e0f47da844491f1d175e9680c5e4a7eb23c4bf1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAB5A 5192 bytes
font_01_sfnt_off0000bcfd.bin
6db2924469b58937b7c0f1e2cbe6b95b515ea8b318e57628dd728bc5eda51ccc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBCFD 10376 bytes

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