Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a82152b78e02ebb…

MALICIOUS

PDF

44.8 KB Created: 2020-10-04 19:48:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 70f49cd12be0162fb9e68e9697600099 SHA-1: b6b5d4b5cb495c1e1b636fd277b843063a98d522 SHA-256: 2a82152b78e02ebb12f491f0c568259615ce3f7fa0e7ccce9551a2f6fe565557
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL, 'https://gettraff.ru/strik?keyword=control+estadistico+de+la+calidad+montgomery+6+edicion+pdf', is the primary indicator of malicious intent. While no scripts were explicitly extracted, the PDF structure and the malicious link suggest an attempt to redirect the user to a harmful site, likely for further exploitation or phishing.

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://gettraff.ru/strik?keyword=control+estadistico+de+la+calidad+montgomery+6+edicion+pdf In 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/71f535c6-163a-43d8-b454-323fcafdf45d/25805905941.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4915d4ce-d079-4bb7-a30e-3e4a38be339c/50688095519.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a78c04f4-7330-4d6c-8b7a-54f3f22300ca/74466200013.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8103a0f-51ac-457a-8f79-b8786f5aa688/ganezarosatotogopowo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c50d1ac4-c0b5-46f3-ae93-b68f474be2d1/70523379297.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/4710/3897/files/78145514439.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/4149/1614/files/space_invaders_combine_like_terms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2334/2495/files/2d_echo_basic_views.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1800/9250/files/38926933305.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5849/3600/files/kicker_l7_15.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/0704/4507/files/time_dilation_equation_gravity.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0740330-e297-448b-a8ba-e1a1ca19a201/roregujenaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d37e5627-bb00-4d91-84ff-9cdf2f075ca9/gerozobewelapubuvaz.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_off0000697c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x697C 5636 bytes
SHA-256: ad215248f101cd5dfa833c2a75f23a3ad5094d9c7656315dfb5e710f1000b31a
font_01_sfnt_off00007c95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C95 12180 bytes
SHA-256: 8791c32d622985ff9b60096b5380b37d4f1b5256ea07fccd9b3a85e2ffd39b77

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