Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3ea8d76ea9c2de6…

MALICIOUS

PDF

45.7 KB Created: 2020-10-31 13:54:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 2fc6eb3dad640402119fa8b32c2aedfa SHA-1: 72d0ce390ac8e15ac98b5fdf61b7b40a5adc73b8 SHA-256: c3ea8d76ea9c2de6e7ada14da794b4117b10d8fc647575b2e49fd03f58d024ce
94 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged as malicious by an ML classifier and contains a link to a known malicious redirector. The embedded URL, https://ttraff.ru/pify?keyword=blue+indigo+snake+range, is the primary indicator of malicious intent, likely serving as a lure for further malicious activity. No scripts were extracted, but the presence of a malicious link suggests an attempt to redirect the user to a harmful site.

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.ru/pify?keyword=blue+indigo+snake+range In PDF document text
    • https://cdn-cms.f-static.net/uploads/4380226/normal_5f8d4b54edb2d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368989/normal_5f8e7509cba56.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/8279107.pdfIn PDF document text
    • https://xenolonaloku.weebly.com/uploads/1/3/4/4/134458783/butaronipu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377410/normal_5f9c4966961c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393503/normal_5f90ad0e1b1da.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gezejoputiwinu/maternal_newborn_child_and_adolescent_health.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/31890884428.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8938/5890/files/pejizonawejesekupozit.pdfIn PDF document text
    • https://s3.amazonaws.com/tamobalasu/balanced_scorecard_example_manufacturing_company.pdfIn PDF document text
    • https://s3.amazonaws.com/vobuturinivi/la_banalit_du_mal.pdfIn PDF document text
    • https://s3.amazonaws.com/kagedatabujo/4th_step_sex_inventory_examples.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E73 5104 bytes
SHA-256: 7328027549adc787c645a75fd2132c3fefd94e6fc831cb6d6485e1f6a9ffa9a8
font_01_sfnt_off00006fe6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FE6 10788 bytes
SHA-256: 4dec2143605351718e5d12884928279319d483c280ab95508b3e52efb49d9a3c
font_02_sfnt_off000094b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94B0 16204 bytes
SHA-256: 532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e

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