Malicious PDF — malware analysis report

Static analysis result for SHA-256 5619c923d656c41c…

MALICIOUS

PDF

42.8 KB Created: 2020-11-08 01:35:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a65bd2b1adff120cbb77f9e8febcc6b3 SHA-1: df941be56033649592be6e6401dd22f5f424cb44 SHA-256: 5619c923d656c41cc3481347d300821a5ec34d5ad424a67d5bbb8777eb9521a7
84 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The ML classifier strongly indicated maliciousness, and the document contains an embedded URI pointing to a suspicious domain. The presence of a visual download button further supports the lure of downloading a file. No scripts were extracted, but the overall structure suggests an attempt to trick the user into downloading a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffe.ru/aws?keyword=disney+emoji+blitz+mod+apk+gems PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4384652/normal_5f9a3e221b060.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392664/normal_5f983fc76ddcf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467285/normal_5fa33c8097174.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372960/normal_5f95b0ae7c9c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369772/normal_5f9b0018030ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407795/normal_5fa5978891f55.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370284/normal_5f8a4fc9683ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409630/normal_5f965e9881f85.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373986/normal_5f8bff412b374.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381988/normal_5f8d1bb2d8ce6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jedobufudajewu/vw_bug_repair_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a9b8153-cac8-4443-9632-474d12d98f2b/radasijunigux.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006693.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6693 5616 bytes
SHA-256: 80dd85a69dbf78a2ec4addc1928646c21fe48e7d692e20f3c75de366310c5e1b
font_01_sfnt_off000079b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79B4 11216 bytes
SHA-256: 3aa2cb0e386e16f9d0b279d5827338987e73f1dc71587b06d9239c019cdf8d06

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