Malicious PDF — malware analysis report

Static analysis result for SHA-256 76979c5752f2297a…

MALICIOUS

PDF

65.8 KB Created: 2021-02-18 04:02:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 94f84f139d424ee916701c14c9ec0f12 SHA-1: 464cbbad31214ef4a032f9813bff5005d3d28898 SHA-256: 76979c5752f2297a762d9f84d4417e42c40a6dc3bfbf65ba84c70a353bec2cfe
96 Risk Score

Malware Insights

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

The PDF file contains embedded URLs and heuristics indicate it is malicious, specifically flagged as a phishing trojan by ClamAV. The document body, though heavily obfuscated, contains text related to 'how to win thailand lottery tips', suggesting a social engineering lure. The primary malicious URL identified is https://baarspo.ru/123?utm_term=how+to+win+thailand+lottery+tips.

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://baarspo.ru/123?utm_term=how+to+win+thailand+lottery+tips PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4376866/normal_600edeab02fee.pdfIn PDF document text
    • http://pipvip.ru/24710037364wbmzj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466676/normal_600df7a39a640.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491670/normal_6008950070505.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420468/normal_5fcf238199153.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/nefagolom/fixopukup.pdfIn PDF document text
    • https://s3.amazonaws.com/nitirew/79862942654.pdfIn PDF document text
    • https://s3.amazonaws.com/rivazixexuguri/another_word_for_automated_answering_machine.pdfIn PDF document text
    • https://s3.amazonaws.com/jitimesolagun/word_mailing_label_template_avery.pdfIn PDF document text
    • https://s3.amazonaws.com/pulujolatepuv/29826498426.pdfIn PDF document text
    • https://s3.amazonaws.com/sojenozap/double_negatives_worksheet_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/juzewojavomofew/multipart_form_data_alamofire.pdfIn PDF document text
    • https://s3.amazonaws.com/nigimul/how_do_you_find_the_height_of_a_triangle_using_trigonometry.pdfIn PDF document text
    • https://s3.amazonaws.com/dazovosugev/kickboxing_exercises.pdfIn PDF document text
    • https://s3.amazonaws.com/bulolimepol/spider_solitaire_2_suits_free.pdfIn PDF document text
    • https://s3.amazonaws.com/leteraxewe/implosion_never_lose_hope_game.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b371.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB371 5200 bytes
SHA-256: 87f758b4255b98f8cb974a14a01f2f1c95e9992c962804cee75003ea09517c05
font_01_sfnt_off0000c528.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC528 9196 bytes
SHA-256: 9b95ac375a6a59e290de6ea07db6f53e75f21b130360ddb741c4649834f6666b
font_02_sfnt_off0000e4be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4BE 16216 bytes
SHA-256: b23afcd792cfe063efda86304ba777edf56c060c1c3067e471e54fae86a46a0c

Open this report in the interactive analyzer, or submit your own file for analysis.