Malicious PDF — malware analysis report

Static analysis result for SHA-256 acaf55a3ec216d04…

MALICIOUS

PDF

34.4 KB Created: 2020-06-01 02:09:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b897e69389477c2d40abb936cc6087cf SHA-1: 7aed12ee823b3c2974ce2a17362de6b5f8fff881 SHA-256: acaf55a3ec216d047ff379fc1a79fae8e2cf8c47d863e71a29f225071854a867
92 Risk Score

Malware Insights

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

The PDF file contains a heuristic indicating a large number of external links, suggesting a link farm or SEO spamming technique. The document body, though partially corrupted, contains text related to 'broken angel mp3 download' and a URL that appears to be a lure. The primary malicious URL identified is http://insureapplewatch.com/uploads/1/3/0/9/130969608/130969608.html#broken+angel+mp3+download, which is likely intended to redirect the user to a malicious site or download. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://insureapplewatch.com/uploads/1/3/0/9/130969608/130969608.html#broken+angel+mp3+download
    • https://sesuxegu.files.wordpress.com/2020/05/sigupisopazane.pdf
    • https://satebelofoxo.files.wordpress.com/2020/05/15812910287.pdf
    • https://zexekiko.files.wordpress.com/2020/05/46143482903.pdf
    • https://digogaba.files.wordpress.com/2020/05/99778042122.pdf
    • https://juzomore.files.wordpress.com/2020/05/faterefuzuro.pdf
    • https://gabotisiv.files.wordpress.com/2020/06/7303907886.pdf
    • https://jupeveni.files.wordpress.com/2020/05/muporifosifare.pdf
    • https://rejosejel.files.wordpress.com/2020/05/wafagapekepimotunaxun.pdf
    • https://wiwoxul.files.wordpress.com/2020/05/mukofud.pdf
    • https://zopowozofoje.files.wordpress.com/2020/05/vawowafebunisudarowuzus.pdf
    • https://vasoponox.files.wordpress.com/2020/05/bikuwazobegarugonebam.pdf
    • https://bodazilafaje.files.wordpress.com/2020/05/17189100033.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005517.bin
bcf9f058a15dfde5b2b446b8c27a0eba3e09d757e2cd040cebab2d9fd55976ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5517 15496 bytes

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