Malicious PDF — malware analysis report

Static analysis result for SHA-256 0abab654be19c4b4…

MALICIOUS

PDF

46.4 KB Created: 2020-11-03 02:00:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: e27fedf30a28cd4f0beaab1536e278ef SHA-1: ea8b9b22d58d7c8f7b4f35e4d2e0f819fc1b4b80 SHA-256: 0abab654be19c4b433ff16c49043a716c4e0da95998b31fd968b961b27f3141d
94 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF was flagged by a machine learning classifier and heuristics indicate it contains a malicious redirector link. The embedded link, https://ttraff.me/123?keyword=musa+acuminata+colla, is a primary indicator of malicious intent, likely leading to a phishing page or malware download. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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.me/123?keyword=musa+acuminata+colla In PDF document text
    • https://cdn-cms.f-static.net/uploads/4406789/normal_5f9501f036154.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366340/normal_5f971165c6f7e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366628/normal_5f8b7148c659e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387919/normal_5f8fb6293185d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428061/normal_5f9da18a5fda9.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/2f331c11-fd10-48b3-a390-fefd479bc60e/common_object_list.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b5c0fee-9452-4539-a50a-f534d58b3e26/37580313982.pdfIn PDF document text
    • https://s3.amazonaws.com/magapeguwabe/the_road_back_to_you_an_enneagram_journey_to_self-discovery.pdfIn PDF document text
    • https://s3.amazonaws.com/takebemanijewok/the_purpose_of_writing_a_report_is.pdfIn PDF document text
    • https://s3.amazonaws.com/jakujakula/bridges_in_mathematics_kindergarten.pdfIn PDF document text
    • https://s3.amazonaws.com/kikunojulejuj/87738422208.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5eb11320-5a98-4c8b-9ffd-13311f099896/91307846741.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/781387ea-bb04-4dca-b2cb-34909919a6fe/vabomolat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5901342d-915d-4a69-80dc-da297bc549ca/xogemef.pdfIn PDF document text
    • https://s3.amazonaws.com/zamuriza/ucsd_political_science.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007546.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7546 4852 bytes
SHA-256: 2dc892869714e8b11d28ac0fde7dc7bae9163cde0843a6cae4fd758a5db4e855
font_01_sfnt_off000085c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85C0 11928 bytes
SHA-256: 85367dcc460707f188e42791324b19797324587e7c6c26701970df393e5461af

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