Malicious PDF — malware analysis report

Static analysis result for SHA-256 179382eb69cd3adc…

MALICIOUS

PDF

21.9 KB Created: 2020-07-27 00:43:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c2225053c500e9a81c3c1303145e8596 SHA-1: 77f6c4975e079a0cff72c66db6883fe9a0b7af38 SHA-256: 179382eb69cd3adc3e30745d698d6905d407d2bc5cc46e6a43281f6265e0d6a4
172 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as an image-only lure, containing a clickable link that redirects to malicious infrastructure. The presence of numerous external PDF links suggests a link farm intended to manipulate search engine results or distribute malicious content. While no scripts were explicitly extracted, the PDF structure and malicious redirector link strongly indicate an intent to lead the user to a malicious site, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

Heuristics 4

  • 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.
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 2 image(s), only 0 text block(s), carries a click-outward action, and is only 21 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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/wb?keyword=probability%20pdf%20questions%20and%20answers
    • http://files.kinderkiddles.com/uploads/1/3/1/4/131438835/ddfe6cbf96.pdf
    • http://files.keays2wellness.com/uploads/1/3/1/4/131437978/metuvolabanobabig.pdf
    • http://files.davidkanmd.com/uploads/1/3/0/7/130775623/b7a8c47fa12bac4.pdf
    • http://files.whiteimprints.com/uploads/1/3/1/4/131407029/tojapoto_kazarovupam.pdf
    • http://files.twopondsfarm.net/uploads/1/3/0/7/130740033/13c8078b806.pdf
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/85233197074.pdf
    • https://cdn.shopify.com/s/files/1/0430/7383/1072/files/36321469939.pdf
    • https://cdn.shopify.com/s/files/1/0437/9761/0657/files/jurowimawofu.pdf
    • https://cdn.shopify.com/s/files/1/0430/1222/7225/files/vililo.pdf
    • https://cdn.shopify.com/s/files/1/0438/6576/8096/files/gotoxewuxilifaresejopoji.pdf
    • https://cdn.shopify.com/s/files/1/0432/9734/1604/files/ropojolemuxinudiginagu.pdf
    • https://cdn.shopify.com/s/files/1/0438/2962/4982/files/8349403840.pdf
    • https://cdn.shopify.com/s/files/1/0430/1602/8309/files/juninuxo.pdf
    • https://cdn.shopify.com/s/files/1/0430/0577/1927/files/19590671451.pdf
    • https://cdn.shopify.com/s/files/1/0430/4856/6938/files/41154929035.pdf

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