Malicious PDF — malware analysis report

Static analysis result for SHA-256 84051a579600ba1e…

MALICIOUS

PDF

41.0 KB Created: 2020-11-03 10:53:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 5aaa8031839569fbf767a9f84b42c871 SHA-1: e69fb4448c909a8c3f8b64f48bcd23012b212820 SHA-256: 84051a579600ba1e292575884989c8b8c3c749d63440b76dbb3ebb1c4aeb13da
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 document body also contains the URL https://ggtraff.ru/strik?keyword=raccoon+river+conference, which is likely used to lure victims into clicking on a malicious link. While no scripts were extracted, the presence of malicious URLs and the ML classifier's high confidence suggest a phishing or malware distribution 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://ggtraff.ru/strik?keyword=raccoon+river+conference In PDF document text
    • https://wajiresejepo.weebly.com/uploads/1/3/0/7/130774962/tuposo.pdfIn PDF document text
    • https://juluvolalo.weebly.com/uploads/1/3/4/4/134435755/mozul.pdfIn PDF document text
    • https://kakawugob.weebly.com/uploads/1/3/0/9/130969990/jisosabasisowopapap.pdfIn PDF document text
    • https://zegojipoxe.weebly.com/uploads/1/3/1/0/131069766/f9bdba75feb7db.pdfIn PDF document text
    • https://nokiziwevapof.weebly.com/uploads/1/3/4/5/134507241/gabomusibunus_bamerasik.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/firigugixujotov/imperium_galactica_2_races.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxutedi/budget_2020_speech.pdfIn PDF document text
    • https://s3.amazonaws.com/vedexajawo/autoclave_sterilization.pdfIn PDF document text
    • https://s3.amazonaws.com/dusubonifu/quia_web_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/pexodugosa/rotikibetuwuwal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffc1fc0c-b77e-44f1-b261-5a2e51ddbe49/caracteristicas_de_las_normas_juridicas_morales_y_sociales.pdfIn PDF document text
    • https://s3.amazonaws.com/magapeguwabe/menu_burger_king_france.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bad7e2ee-2f4b-448d-bb0d-4bf1a78d9594/duzekuxidodasebafeb.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_off0000607a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x607A 4732 bytes
SHA-256: 9d2547e1ac1038a55985a7714e98840bab1fcda2feb3c911ab7329b4ca8ca051
font_01_sfnt_off000070b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70B2 11560 bytes
SHA-256: 944062eb56ecb321d9f01cbef1367393ee6cbeef8d103cfbfc957c3d9c2e9277

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