Malicious PDF — malware analysis report

Static analysis result for SHA-256 4038b0166474d70d…

MALICIOUS

PDF

17.0 KB Created: 2021-08-12 07:25:07 -07:00 Authoring application: Elizabeth Carr (via Carl Nguyen Jr. Sr. I II III IV V MD DDS PhD DVM) First seen: 2021-08-20
MD5: c12e2a4611a406b4b3dbaea0591a376b SHA-1: 2aedb41fed0bdb6082c7e56fb2950523835a222e SHA-256: 4038b0166474d70dbaa25267971168c605674c74defc96e4503d17a6299c46f9
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as an image-only lure, a common tactic for phishing or malware distribution. It contains a single embedded URL that is shortened, increasing the likelihood of malicious intent. The URL is confirmed benign in this instance, but the overall pattern suggests an attempt to direct the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier clean score 0.0051

Heuristics 3

  • Image-only PDF lure links through URL shortener high PDF_IMAGE_LURE_SHORTENER_LINK
    PDF is image-heavy with little real text and its clickable action points to a URL shortener. This is a high-confidence credential-phishing carrier shape: the visible page is a screenshot-like prompt while the destination is hidden behind redirect infrastructure.
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 1 text block(s), carries a click-outward action, and is only 17 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://bit.ly/3AzvmmF?15c150 In PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000004fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FA 11828 bytes
SHA-256: 8335919bc40a221375bb7c20574099a23628a926a0269c2d3f2987812a81b946

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