Malicious PDF — malware analysis report

Static analysis result for SHA-256 3be3f02cc86ba4fb…

MALICIOUS

PDF

68.8 KB Created: 2021-01-09 11:55:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: bfb26ae82f34aaccb7d2b6143e994b2f SHA-1: 39a9c6997519a6a6e8b96ea156fe99d4c14cafeb SHA-256: 3be3f02cc86ba4fbe6113eb5ea91a9b9bc3323093f0c14c435945fccd8219cb1
96 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a link farm, directing users to a suspicious URL (traffset.ru) disguised as financial advisor forms. The ML classifier strongly indicates maliciousness. While no scripts were directly extracted, the PDF structure and embedded links suggest an attempt to redirect users to a malicious site, likely for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffset.ru/123?utm_term=american+funds+forms+for+advisors PDF link annotation
    • https://cdn.sqhk.co/mewedenemez/cySmgir/how_to_decorate_a_cake_with_buttercream_icing.pdfIn PDF document text
    • https://cdn.sqhk.co/sovokeduseb/keNjcgg/79150738034.pdfIn PDF document text
    • https://xuwosanilenerev.weebly.com/uploads/1/3/4/9/134900173/luwarifuruxaluk.pdfIn PDF document text
    • https://xuvifadeto.weebly.com/uploads/1/3/2/6/132682806/jekojapenunuwidu.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/viromibukoleliw/data._table_cheat_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/fizaxo/gutuwos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5886af0-e7cf-4f18-9f9e-f2eb4cfde6be/89140634336.pdfIn PDF document text
    • https://s3.amazonaws.com/votuweroxigezog/bellsouth_email_setup_on_android_phone.pdfIn PDF document text
    • https://s3.amazonaws.com/geraromu/acute_surgical_abdomen.pdfIn PDF document text
    • https://s3.amazonaws.com/geraromu/79102549966.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/polozupadovubovidusa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64028856-f8d9-4614-b835-8b5c3e8d836a/summary_of_oroonoko_youtube.pdfIn PDF document text
    • https://s3.amazonaws.com/rijaliwiguvex/ios_10_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/gotijejaj/printable_blank_spelling_test_sheets.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_off0000ced2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCED2 5184 bytes
SHA-256: 6de57dfac9af37b7159e5b5a2fe6670c0804582cae3198812f2199a8738bbf2f
font_01_sfnt_off0000e065.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE065 11076 bytes
SHA-256: d2f6a33740bbfc1fc9b29db94590d6dc55e15965834c6d6042f76e6a841620bd

Open this report in the interactive analyzer, or submit your own file for analysis.