Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b835664683d1e7b…

MALICIOUS

PDF

76.2 KB Created: 2021-03-13 15:54:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 9ee836b7443a06c8840dcdd436cec6de SHA-1: b1b3e4c45db5b0056ba84c58cae95ac43c3757c3 SHA-256: 1b835664683d1e7b495466a76135e24c8508ca1b5d90c5e12f5ee1c3f0d20104
164 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://lozipotod.ru/123?utm_term=sql+server+2014+standard+crackeado PDF link annotation
    • http://giwitijudaleka.mygamesonline.org/60677057258.pdfIn PDF document text
    • https://weduparazibad.weebly.com/uploads/1/3/4/7/134710999/revuvupup.pdfIn PDF document text
    • http://mazisim.mywebcommunity.org/amliorer_mon_franais_oral.pdfIn PDF document text
    • http://lazujifoxupa.getenjoyment.net/10682097625.pdfIn PDF document text
    • http://vodabutopidaru.getenjoyment.net/informative_essay_examples_for_high_school.pdfIn PDF document text
    • https://fuxarudoniw.weebly.com/uploads/1/3/5/3/135350341/7126295.pdfIn PDF document text
    • http://xesapuwax.mywebcommunity.org/favigukoxoropeg.pdfIn PDF document text
    • http://kuworekokinig.medianewsonline.com/free_baby_bandana_bib_pattern.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://d451e762-8e00-4155-9971-9512d28d2528.filesusr.com/ugd/b52961_010afbd29341436b9d97b0a6aded484e.pdf?index=trueIn PDF document text
    • https://75cc4b12-69da-4024-8422-75f9303faa99.filesusr.com/ugd/d6c222_eea4daf3a48d4e60ad684e0a29abf64d.pdf?index=trueIn PDF document text
    • https://da18e6a8-d720-42de-a88c-3f13daad7efb.filesusr.com/ugd/08fe48_8d8fce86a0c043ab85728c0e75e43ba4.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lekezaru/ficus_bonsai_care_sheet.pdfIn PDF document text
    • https://711a90e7-97f2-4eab-8690-3003ec1e9b64.filesusr.com/ugd/a0905b_dd2c213b662348f0aa50b6d6ca2ed6ec.pdf?index=trueIn PDF document text
    • http://degevojorak.myartsonline.com/52706216197.pdfIn PDF document text
    • https://s3.amazonaws.com/perurulexi/what_are_the_best_quiz_questions.pdfIn PDF document text
    • https://5d94d51b-2702-4b64-8df3-eadd022f3edc.filesusr.com/ugd/2ddd39_61be830f7108403ea1041f6a4ab50600.pdf?index=trueIn PDF document text
    • https://1b3fde16-7575-45ba-b40e-8916c64185ca.filesusr.com/ugd/8874e8_2c98727103d14753b59a064ef084c3c2.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jevopemosod/performance_dashboard_excel_template.pdfIn PDF document text
    • https://8569cc17-8b2a-4187-ace0-95b0550b99f0.filesusr.com/ugd/d6eede_48a1412cdee148fa93562239edb4b7f8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fukepez/bevunarubum.pdfIn PDF document text
    • https://081e7fb2-604d-424b-9b75-a58d54a71a44.filesusr.com/ugd/abd6ea_e2d65be71ddd41049512f7197046bdc8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sukobogixe/6th_grade_vocabulary_words_and_definitions.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9DE 5700 bytes
SHA-256: fa2d3ac6c4d3fc8e0e4667b3e79860373c8a70b3e990c45aef012d09c8a2da93
font_01_sfnt_off0000fd68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD68 10812 bytes
SHA-256: 35d49edf9df68e6ffdac94252ce40c531780fd8558238ba5bb17d5941db2ad54

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