Malicious PDF — malware analysis report

Static analysis result for SHA-256 68cb25c03b17d3b2…

MALICIOUS

PDF

49.8 KB Created: 2020-10-30 09:59:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 4ead86abb0182380071b74f7da5dfa57 SHA-1: 73df8f5d12435681812ac78d6a7718327fcd3ade SHA-256: 68cb25c03b17d3b2ef41af1dc2305ae30e43db4f06e295007029d80cba014f9d
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 points to 'ggtraff.ru', which is flagged as malicious. The document body, though heavily obfuscated, also contains this URL, suggesting it's the primary lure. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://ggtraff.ru/aws?keyword=linn+county+mo+health+department+facebook In PDF document text
    • https://cdn-cms.f-static.net/uploads/4375357/normal_5f9980404ead8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411926/normal_5f94449ec9027.pdfIn PDF document text
    • https://tavumake.weebly.com/uploads/1/3/2/7/132740551/wodipa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://uploads.strikinglycdn.com/files/79f53a17-6e91-464d-8550-bca2b1ec14d7/75308707947.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/9461/1365/files/socomec_atys_p_m_user_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/8216/1570/files/wobuvitusimovawujekazus.pdfIn PDF document text
    • https://s3.amazonaws.com/suxiweke/coordinate_geometry_questions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b30d5e6f-9665-4074-8e0c-05267e06bb70/fawenokonewefeg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f34c01ff-fd53-411d-a891-864beaed7d9c/interview_questions_about_parenting_styles.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0507/4790/0076/files/type_1_binary_ionic_compounds_definition.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://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004666.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4666 5464 bytes
SHA-256: b4eb551674459654c5ad2897817f1c327ee525500c337d01c3fd67ff0744daad
font_01_sfnt_off000058d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58D9 3720 bytes
SHA-256: d0c9e33916e9e64e42e31bcf0d345f6c2fcd41735b1a34df0119bd0eb1094281
font_02_sfnt_off0000643c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x643C 9908 bytes
SHA-256: 77cc3b1c5ad0f7f05fd5c0906393e200dce63af65fcd287a415f2137783f0068
font_03_sfnt_off000085c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85C3 16204 bytes
SHA-256: 532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e
font_04_sfnt_off00009b2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B2F 9248 bytes
SHA-256: ed7126ad9c7eefe8e9453497a9addbfe3bcb33e857b1055b48b0d06ac55631b2

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