Malicious PDF — malware analysis report

Static analysis result for SHA-256 8de75f0d3ff50b7f…

MALICIOUS

PDF

42.3 KB Created: 2020-10-29 10:33:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: d6cbf3bab6ccd343d0de5b318d5b3cd6 SHA-1: 2a087becebab8cff6a78380e2d35e140d768f8af SHA-256: 8de75f0d3ff50b7fb2c1a901c073581db398406f90987c563e0807fabf80af7d
94 Risk Score
Tags
free-cdn-ebook-manual-lure

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 'ttraff.club'. The document body, though heavily obfuscated, also contains this URL. This indicates the primary purpose is to redirect the user to a potentially malicious site, likely for phishing or to download further malware. No scripts were extracted, but the presence of a malicious URL in a PDF is a strong indicator of a phishing or malware delivery attempt.

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.club/pify?keyword=idaho+department+of+lands+fire+permit In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366399/normal_5f871e2ad104e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374518/normal_5f8eabb6ee8a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385217/normal_5f8e690fd6c00.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370089/normal_5f8ab28495f5d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377909/normal_5f9333c4a283e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393639/normal_5f943bc86973b.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/1/0500/3018/2571/files/v60_ventilator_user_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e675a1df-48f5-4e03-ba3c-6668727baadc/can_you_download_an_app_on_someones_phones_without_possession_of_there_phone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d24dc6d9-7822-4d56-ac39-c56fb00fcafc/anthem_ayn_rand_study_guide_question.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f08a2836-2762-4823-bd20-bd90bdbacbe9/vokuwabulatotemasa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc5b5753-6d09-4175-9576-8e32c8f48255/34010995155.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fef119c-2f38-4635-91ed-5022a99f9b15/74277071924.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/1511/6232/files/examples_of_text_structure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/9319/5455/files/definition_of_centralization.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0491/8122/9222/files/thick_face_black_heart_versi_indonesia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0699/2289/files/picture_composition_worksheets_for_grade_8.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eee672e5-af0b-4643-a7a2-3088c29eead0/dd_3.5_call_lightning.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3a2db8e-6276-4fbd-98ab-b8967f360c45/66150550995.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_off000066ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66AB 5216 bytes
SHA-256: b9c2521b206efc0c54a7cc6d006ea6e41b28c2f0d44d7a9d643e2978fe498309
font_01_sfnt_off00007843.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7843 10756 bytes
SHA-256: 4e2b002080e255655df5a428df23d53668867f4ff0f767d8efa7de5df4487dff

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