Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc16ac568e275149…

MALICIOUS

PDF

41.4 KB Created: 2020-11-02 04:10:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5dd0069b02ee35222cad54bbafd9b2a0 SHA-1: d73a1697ae8b337b82f79d0450193e164d98d0f3 SHA-256: cc16ac568e275149a3999f9120c2faec8eb071fa17d19072d86ad5888488ddf1
94 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and contains a link to a known malicious redirector. The embedded URL `https://gettraff.ru/123?keyword=death+on+two+legs+bass` is the primary indicator of malicious intent, likely serving as a lure for further compromise. No scripts were extracted, but the presence of a malicious link strongly suggests a phishing or malware delivery 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://gettraff.ru/123?keyword=death+on+two+legs+bass
    • https://cdn-cms.f-static.net/uploads/4393751/normal_5f922f0403bc5.pdf
    • https://lowizozexide.weebly.com/uploads/1/3/0/7/130776176/4008283.pdf
    • https://cdn-cms.f-static.net/uploads/4393356/normal_5f9529d7b6cd4.pdf
    • https://fuparududewon.weebly.com/uploads/1/3/1/8/131856041/c17f77413a0057.pdf
    • https://jizufolikoni.weebly.com/uploads/1/3/4/3/134349493/balame.pdf
    • https://baletepo.weebly.com/uploads/1/3/0/7/130776023/rugefawepoxofe_kejafavu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0440/7581/0966/files/kitchen_nightmares_le_bistro_full_episode.pdf
    • https://cdn.shopify.com/s/files/1/0434/5223/5938/files/76021436332.pdf
    • https://uploads.strikinglycdn.com/files/7adb3b5f-261b-4014-822b-95f9f97b2a7e/gipusujogowaz.pdf
    • https://cdn.shopify.com/s/files/1/0502/3055/8878/files/nikefa.pdf
    • https://uploads.strikinglycdn.com/files/d5b91a1f-aa3f-474e-9418-826b6fd35a79/8186488942.pdf
    • https://uploads.strikinglycdn.com/files/7467ec83-238f-4f77-a606-3495ffd5e5db/17677099030.pdf
    • https://uploads.strikinglycdn.com/files/e6da6b34-d571-499a-b477-233e77b201d1/rumagufifiwupalabafu.pdf
    • https://uploads.strikinglycdn.com/files/d08fb473-4cd2-4139-b911-217dab4c2431/46571940524.pdf
    • https://cdn.shopify.com/s/files/1/0436/6496/5782/files/first_try_8.pdf
    • https://cdn.shopify.com/s/files/1/0495/2614/5190/files/kriya_yoga_in_marathi.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000617b.bin
bd52f14f7fdc0ed6e4a38db2d27f4e5efc45e758d43e0f005092e9d41b2ba860
pdf-font-stream PDF embedded font (sfnt) at offset 0x617B 5080 bytes
font_01_sfnt_off000072de.bin
739f20a00659faa2ad84eb24aee4600da9f009e59252d0e9dee94e761bdaafd2
pdf-font-stream PDF embedded font (sfnt) at offset 0x72DE 11104 bytes