Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f7d748741a34f45…

MALICIOUS

PDF

40.8 KB Created: 2020-10-02 19:56:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: f561be0ffe139c90323c495709a2aee8 SHA-1: 231826e18240600299f9c79f4a282f43b6789eaf SHA-256: 4f7d748741a34f458ce4fba921a74775b3c0e1807fff34bc4033668e3f17181b
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.me/pify?keyword=seabird+island+community+school'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to lure the user to a malicious site, likely for a phishing or malware download campaign.

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/pify?keyword=seabird+island+community+school In PDF document text
    • https://site-1038590.mozfiles.com/files/1038590/nulitumifojalijiwe.pdfIn PDF document text
    • https://site-1037059.mozfiles.com/files/1037059/19301657796.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/2937/6407/files/misetotawunilur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0316/6369/files/54096574140.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7106/9594/files/dauntless_cell_fusion_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4398/6335/files/89323124711.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d639481-2581-4d93-b43b-af65c4aded46/budaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce476c09-fb3a-46ee-bf09-4c37db997660/88749404704.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9723/4338/files/magnum_pi_shirt_australia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2311/2104/files/main_idea_vs_theme_task_cards_answer_key.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_off0000609c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x609C 5524 bytes
SHA-256: f62fcb5d8c623e5dd77a8a9dd1171c0a747498c6bfa4690aa5a24615b8411aef
font_01_sfnt_off0000733a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x733A 10204 bytes
SHA-256: c447edf93bd0c907497f9c5cdc4e3cf5853f2054396cff34105128f5c6903919