Malicious PDF — malware analysis report

Static analysis result for SHA-256 572c014c7dfdb4ce…

MALICIOUS

PDF

122.7 KB Created: 2018-08-15 16:04:23 +01:00 Authoring application: Adobe Photoshop CC 2018 (Macintosh) (via Adobe Photoshop for Macintosh -- Image Conversion Plug-in)
MD5: dc7576aacca13781b688d0426ac9ddca SHA-1: bc01fe1f612b30cc8d85cd40bf98a93ce7b0c3b0 SHA-256: 572c014c7dfdb4ce9c6a556609a95e156b913ff2324ec9f924a3fb3ea79dab76
62 Risk Score

Malware Insights

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

The PDF was identified as an image-only lure, a common tactic for phishing. It contains a single clickable link, http://bit.ly/2LqelBr, which is a URL shortener, further obscuring the final destination. This suggests the document's primary purpose is to trick the user into clicking the link, likely leading to a malicious website or download.

Machine Learning

  • Nyx PDF Classifier clean score 0.2356

Heuristics 4

  • 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 2 image(s), only 0 text block(s), carries a click-outward action, and is only 122 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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 http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/g/img/
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/photoshop/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/sType/ResourceEvent#
    • http://ns.adobe.com/pdf/1.3/
    • http://bit.ly/2LqelBr

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_cff_off00015fbd.bin
5cf2a89ea54a5b95f6e7bd96d45c3cbf27d38b74ca04012ffbe12406ae869b9c		 pdf-font-stream PDF embedded font (cff) at offset 0x15FBD 1038 bytes
font_01_cff_off00016714.bin
dd85cf0095fdc6de101644f176a5ada6d491e8fad57dbf33dc374088e6b6d1fc		 pdf-font-stream PDF embedded font (cff) at offset 0x16714 1161 bytes
font_02_cff_off00016fa2.bin
8bce2ca8a1a720a037b767b3838d47f7da90b105bb9e35e2e2a96c72abe06bfe		 pdf-font-stream PDF embedded font (cff) at offset 0x16FA2 4385 bytes

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