Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0f5b0afe3323cc8…

MALICIOUS

PDF

44.3 KB Created: 2020-10-07 17:08:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 8e28e2ec4d6e08886edf1f66c74e1c54 SHA-1: b419ddcb5dcab88784f75ba0f33a1878211b14ce SHA-256: f0f5b0afe3323cc88912300a92b0596f494a6354fb863aafa9dba7299bba2a5d
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/pify?keyword=dominio+y+contradominio+de+una+funcion+ejemplos'. The ML classifier also flagged this PDF with high confidence. Although no scripts were explicitly extracted, the presence of embedded URLs and the nature of the redirector suggest an attempt to lure the user to a malicious site, likely for phishing or to download a secondary payload.

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://ttraff.cc/pify?keyword=dominio+y+contradominio+de+una+funcion+ejemplos In PDF document text
    • https://site-1036977.mozfiles.com/files/1036977/83810437659.pdfIn PDF document text
    • https://site-1041690.mozfiles.com/files/1041690/xodoxi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/4cf7f13b-eab2-454b-a8be-f27855f94afb/88806181763.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13285625-a167-4cbb-9a0d-0b4fbb9e54ac/20997702805.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c11d9358-fdb6-4e1d-abe9-9dc65c78c6be/64926396553.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43e97620-6cbe-4713-a7ec-f3e12a8f357f/gariju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23be901c-2615-4917-b3ff-2f65ea7657d3/buluzegugimawadojaru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a12f1aca-1ad6-4ba9-88ae-ac389e4a4029/farasad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3052da0e-362c-4d67-b098-dae1133383a7/suteluruso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f80729c-8904-4ee3-b480-07d8287cb703/89108039917.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4dd6afae-1f7c-4166-b4e3-1fcee2bec0fa/41452153965.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b705dd02-7e45-4123-896e-70ec738a3c9f/refasutovutazatinoxesej.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63B9 5476 bytes
SHA-256: 212b8e029ce5a3a554cfdfd64020084e00fe78ba8c6625cc239390266ef5f57f
font_01_sfnt_off00007653.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7653 1800 bytes
SHA-256: 51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0
font_02_sfnt_off00007ee1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EE1 11588 bytes
SHA-256: 4cd4c6a2c8c1d005eb31142510642699d3a9a22bed0b65d969db4d08b21c0342

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