Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7ddd4f30eb07b1b…

MALICIOUS

PDF

75.6 KB Created: 2021-02-22 19:49:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 000070ae4ace55149571ae6719bf9beb SHA-1: 835511baf0904dec0593d2c27bd1de411f140ee7 SHA-256: f7ddd4f30eb07b1b711021a4c822a3614f1ff339600502a3b7c6e7fa7469d13d
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'bologen.ru', suggesting a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of common techniques used to deliver malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/123?utm_term=corsair+k95+rgb+platinum+mx+brown+review PDF link annotation
    • https://tipuvativojodud.weebly.com/uploads/1/3/4/7/134754547/2715298.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469849/normal_600dd69ba11ef.pdfIn PDF document text
    • https://junerokiwoji.weebly.com/uploads/1/3/0/7/130775834/fupanifabemetek_mufimigegegodid_gegobup_xamurujoma.pdfIn PDF document text
    • https://mitigifagoted.weebly.com/uploads/1/3/5/3/135325532/sotulum_somowefani.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499999/normal_5fffa4ae2e437.pdfIn PDF document text
    • http://mawidoxejonej.iblogger.org/bandicam_full_crack_32_bit.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366014/normal_5fd648a345146.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450512/normal_5fd394db4d2f7.pdfIn PDF document text
    • http://nijibegosovatiz.iblogger.org/24900625289.pdfIn PDF document text
    • https://pazomanu.weebly.com/uploads/1/3/1/0/131069777/zonexuxabup-guravaxekajab-zitapetaru-nejojewewunisep.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488558/normal_5fc7effad4678.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500667/normal_5fe4285dd8266.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/ravuxudibure/sasafosane.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/clothes_exercises_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/kegubinefuda/49246854072.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifawuvawot/dead_island_2_mod_apk.pdfIn PDF document text
    • http://lexojowal.epizy.com/domain_driven_design_evans.pdfIn PDF document text
    • http://venakato.epizy.com/bert_and_ernie_pumpkin_carving_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/string._format_java_fhrende_nullen.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_off0000ea02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA02 5748 bytes
SHA-256: 82a1cb8b6888e96d37d13bdae969e1697437d74100271e95bceb0d624844eb24
font_01_sfnt_off0000fd98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD98 10508 bytes
SHA-256: dc19711c2b22bb3e48badddcb50b406b3f74960c41c1733a130981b06b8bc71f

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