Malicious PDF — malware analysis report

Static analysis result for SHA-256 b125e0c3aab278df…

MALICIOUS

PDF

87.3 KB First seen: 2021-05-23
MD5: ea6bbea7aa08830671b93f1a401dc79c SHA-1: 3b7924d22d89fd57967898a1ac8cf878122bafbf SHA-256: b125e0c3aab278df4961d3ada7720c96c7c2c1f74b6582e35525c99cbe319ee5
64 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains an image-based lure, a common tactic for phishing campaigns. It embeds a link to a suspicious URL, tarhanelektronikvekamerasistemleri.com, which is likely used to host a malicious payload or redirect to a phishing site. The PDF structure and embedded link suggest an attempt to trick users into interacting with malicious content.

Machine Learning

  • Nyx PDF Classifier clean score 0.0002

Heuristics 4

  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 2 image(s), only 2 text block(s), carries a click-outward action, and is only 87 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://tarhanelektronikvekamerasistemleri.com/data/bas/office365/office365/office365/office365/office365/office365/office365 PDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#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://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/pdfx/1.3/In PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00000ac1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xAC1 87957 bytes
SHA-256: 9c433ff726237687ff534eb71c78ad97b8b279b562381d0571d65e5e115a8a0a

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