Malicious PDF — malware analysis report

Static analysis result for SHA-256 6933b741e932a718…

MALICIOUS

PDF

39.7 KB Created: 2020-10-05 21:27:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: b0bd8312f5ff3f92cee2065fbfafd755 SHA-1: 50cf89dae82886ba1b424acf086fde1822384b03 SHA-256: 6933b741e932a7185087e94d6c5af9c50b91c875778af0e3c351dc94daf6e78a
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, ggtraff.ru, which is designed to lead users to malicious content. The ML classifier also strongly flagged this PDF as malicious. The embedded URL is the primary indicator of malicious intent, likely serving as a lure for a phishing or malware download attempt.

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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/strik?keyword=cuadernillo+de+matematicas+sexto+grado+resuelto In PDF document text
    • http://wuvedoro.motorheadtv.com/uploads/1/3/0/8/130874330/b559e8055a70ef.pdfIn PDF document text
    • http://zegun.simplyyogavancouver.com/uploads/1/3/2/6/132682235/b1c1718a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/7156b739-e503-40f8-9479-ea737cee6886/73246463237.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56e92a42-2521-4516-a323-71cd80e748d7/56505134214.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/629007c9-b7a9-4802-8300-3d85c54fb5bc/meribuxegap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2920/7957/files/gerap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7720/6178/files/13921108848.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7fb7bb2f-3e72-4fec-8813-d0bf58e61e67/59948781350.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b90a3b20-ecec-46f9-987d-7b267d83ce1d/29837752515.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22a0cc6e-70eb-43cf-8e5a-5cb6bf14b4c9/migerowidatemazu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9dba9493-9030-423d-a8be-8697ead82936/53617207792.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005a91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A91 5232 bytes
SHA-256: 8dad95b2fba60c2effe42e101e0471085d1b35b8c7f7c24731a36040d24ba37c
font_01_sfnt_off00006c44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C44 11040 bytes
SHA-256: 9d3248b8758e5fc2f7d3b79290d0074e642275d79f0b878cbcd6baf20d956026