Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0a82e1549a8dbae…

MALICIOUS

PDF

16.6 KB Created: 2020-10-31 12:55:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fa6e50adaab827983e5ebf80c88f006a SHA-1: af7909bf8cafb84eafdf2baa5694d5c51514bbfc SHA-256: b0a82e1549a8dbaeb876a5a1e377d6171691fc83ef904c66a41f35764110f28e
172 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is an image-only lure, typical of phishing campaigns, designed to trick users into clicking a link. The primary link, 'https://ggtraff.ru/aws?keyword=weather+map+with+symbols', is identified as a malicious redirector. The document also contains a large number of links to other PDFs, likely for SEO manipulation or to obscure the malicious intent. No scripts were extracted, but the presence of a malicious redirector and the lure technique strongly suggest a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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 1 image(s), only 0 text block(s), carries a click-outward action, and is only 16 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://ggtraff.ru/aws?keyword=weather+map+with+symbols
    • https://cdn-cms.f-static.net/uploads/4369311/normal_5f9324bc3f153.pdf
    • https://jawowigo.weebly.com/uploads/1/3/0/7/130774982/5091572.pdf
    • https://cdn.shopify.com/s/files/1/0498/2626/7291/files/epson_tmt88iv_driver.pdf
    • https://cdn.shopify.com/s/files/1/0468/8606/0189/files/mexunimowekalotojuwedo.pdf
    • https://uploads.strikinglycdn.com/files/be1af8d5-7bb1-4308-ae7b-f11d048d7a11/nutivekikimufe.pdf
    • https://cdn.shopify.com/s/files/1/0507/1428/0115/files/2818152204.pdf
    • https://uploads.strikinglycdn.com/files/169994ad-45e1-4cbf-94f9-3cb20582495c/tidadaxi.pdf
    • https://uploads.strikinglycdn.com/files/20c85362-7caa-4147-9c41-17323d5ab25f/45274292461.pdf
    • https://cdn.shopify.com/s/files/1/0487/9849/8981/files/big_creek_marina_camera.pdf
    • https://s3.amazonaws.com/tudawufed/karambit_fighting_techniques.pdf
    • https://uploads.strikinglycdn.com/files/e950df62-1ffe-4aae-9b1f-fc480683a6a3/22774481937.pdf
    • https://uploads.strikinglycdn.com/files/8da4a98c-1d23-4542-9c98-8741d8b79fe4/pefadijajog.pdf
    • https://cdn.shopify.com/s/files/1/0507/0972/5339/files/5065836102.pdf
    • https://uploads.strikinglycdn.com/files/f1342caf-7582-4ae8-835f-88be050a2a58/28959901343.pdf

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