Malicious PDF — malware analysis report

Static analysis result for SHA-256 9db787458da1c1ef…

MALICIOUS

PDF

75.8 KB Created: 2021-02-07 23:31:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: e1003120c7447545b0cd12f9e83b4f92 SHA-1: 82571d22b9622e371bac4f0b5ece5f348d4fe36b SHA-256: 9db787458da1c1ef6fd8591628f65d52db64d4960c21967ff98d979919a4fc2d
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of embedded external URIs, specifically 'https://bologen.ru/aws?utm_term=amman+bakthi+song+video', suggests a phishing or credential harvesting attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are consistent with common phishing lures.

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/aws?utm_term=amman+bakthi+song+video PDF link annotation
    • http://davofaso.22web.org/glitch_template_after_effects_free.pdfIn PDF document text
    • http://naxiramomamaz.66ghz.com/bilobunuzexudixak.pdfIn PDF document text
    • https://tiguziriwisil.weebly.com/uploads/1/3/1/0/131071210/vilekudonofez.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385217/normal_5fcb9ad0b9672.pdfIn PDF document text
    • http://raliwoze.iblogger.org/arraylist_hashmap_string_string_android_example.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410674/normal_601a80718e904.pdfIn PDF document text
    • http://gozatelaji.22web.org/impact_analysis_template_excel.pdfIn PDF document text
    • http://zalixunepujo.22web.org/adobe_creative_cloud_indesign_templates.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379603/normal_5fcea2ce2768b.pdfIn PDF document text
    • https://kilizilefepik.weebly.com/uploads/1/3/0/7/130775254/f96c5698.pdfIn PDF document text
    • https://falototadapi.weebly.com/uploads/1/3/3/9/133989324/zajipisirej_pokopo_mifer_rorus.pdfIn PDF document text
    • http://pexiwaz.iblogger.org/android_galaxy_s6_edge_plus.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/tobobowu/wivajujuja.pdfIn PDF document text
    • https://s3.amazonaws.com/geraromu/834629277.pdfIn PDF document text
    • http://dozonexupiwef.epizy.com/44891339649.pdfIn PDF document text
    • http://javewexo.epizy.com/cajeta_coronado_informacion_nutricional.pdfIn PDF document text
    • https://s3.amazonaws.com/wetevali/xuwujekegufemuzaf.pdfIn PDF document text
    • https://s3.amazonaws.com/jazuravazaguz/kidofofijetesi.pdfIn PDF document text
    • http://sajavisazoz.epizy.com/chitika_meda_chitika_vesara_telugu_song.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_off0000e929.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE929 5364 bytes
SHA-256: 72ed4ecad21e83d12b38edce918e00840581836b2aed730a1e767ee181832523
font_01_sfnt_off0000fb46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB46 11408 bytes
SHA-256: b4f26eee026bc9c78e28403019a3a43db03fd5af5131c9ad44f48943228f109d

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