Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4314ee80cd544db…

MALICIOUS

PDF

65.9 KB Created: 2020-12-02 08:31:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 1f47ff0e2f3b774134c71920bab08a8a SHA-1: bb793dc95af38b4654d1e2f5553e2d5c87ff9dfe SHA-256: c4314ee80cd544db1dbc46948581e61906344c3bee96336c0549c203e117d103
154 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'https://traffmen.ru/strik?utm_term=ya+lo+hiciste+sin+amar+pelicula+completa+online'. This URL is also flagged as malicious by external reputation services. The document body, though heavily obfuscated, contains text related to a movie title, likely a lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffmen.ru/strik?utm_term=ya+lo+hiciste+sin+amar+pelicula+completa+online In PDF document text
    • https://cdn-cms.f-static.net/uploads/4373502/normal_5f997123ea403.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/zagapaxa/xuzanexikopobakez.pdfIn PDF document text
    • https://s3.amazonaws.com/bokexizometun/gabojopela.pdfIn PDF document text
    • https://s3.amazonaws.com/jovekus/nomurofe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70c56333-1475-466f-b34d-c6a1cf34fc1e/bozodug.pdfIn PDF document text
    • https://s3.amazonaws.com/vovuzize/47196296705.pdfIn PDF document text
    • https://s3.amazonaws.com/gudukupir/acknowledgement_phd_thesis_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f1e6e0e-0c2e-40d7-9d79-4de5bb01cc9d/shoei_neotec_helmet_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/tobaziw/xusajelanosakogazos.pdfIn PDF document text
    • https://s3.amazonaws.com/desenaz/43990285431.pdfIn PDF document text
    • https://s3.amazonaws.com/pusumowi/team_construction_llc_butte_mt.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1570304a-385b-43e4-bfe1-12d351daf261/toys_r_us_assessment_questionnaire_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/kovilowab/topographic_survey_project.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/ageratum_conyzoides_description.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b89b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB89B 5136 bytes
SHA-256: e267527d92a9c8100ffa122d3b93a781402f4dd95434477a0157fa0b5fa67d3a
font_01_sfnt_off0000c9dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9DD 2080 bytes
SHA-256: e3e065333d0d8ebacbea137f1334f6071a4bfbfd64bfb940b3852a59c0664482
font_02_sfnt_off0000d3a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3A0 11392 bytes
SHA-256: 88c9e63d34b9f29830d8e0800103c3325fd1fcbc4ec2d268f90b5858fd4bb5df

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