Malicious PDF — malware analysis report

Static analysis result for SHA-256 551e8fc0b515f815…

MALICIOUS

PDF

76.1 KB Created: 2021-03-16 11:03:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 4d1a6f656951a81ddb2ca8b514ce53e5 SHA-1: 3a0d372827937e6f94eb34c1263ca9073d81b7a8 SHA-256: 551e8fc0b515f8156f9ece0b4e9287b56cec338466849f1a81dc03c9c52feaec
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains a lure related to 'Adopt Me' game items, redirecting to a suspicious URL. The PDF structure and embedded content suggest it's designed to trick users into visiting a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://vilenefex.ru/strik?utm_term=how+to+make+a+frame+bunk+bed+in+adopt+me PDF link annotation
    • http://juwaniwabi.medianewsonline.com/old_school_places_near_me.pdfIn PDF document text
    • http://mitutepoka.medianewsonline.com/all_of_me_violin_notes.pdfIn PDF document text
    • http://warixedivukinat.mygamesonline.org/what_are_the_best_cordless_phones_for_hearing_impaired.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368238/normal_60343ca8341f9.pdfIn PDF document text
    • http://gejedesoni.getenjoyment.net/51547719463.pdfIn PDF document text
    • http://mufutekuson.getenjoyment.net/zejaki.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445106/normal_6021a3d89bc0e.pdfIn PDF document text
    • http://nitafibejuze.mygamesonline.org/91446080130.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/xufaxoferugod/island_waste_sorting_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/juzewojavomofew/50187990131.pdfIn PDF document text
    • https://944bcc21-9f45-42c2-9889-8cf837fa5d1c.filesusr.com/ugd/50f869_53039dcdeb284c2897ca2f64f53f0216.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/juwofuxufijup/nilapunasamapofa.pdfIn PDF document text
    • http://lofawevivere.epizy.com/mizesevudafis.pdfIn PDF document text
    • http://jumepenitujox.atwebpages.com/lelebopupagukitof.pdfIn PDF document text
    • http://jisunopesaluzi.atwebpages.com/5339181360.pdfIn PDF document text
    • http://gototura.myartsonline.com/fluid_dynamics_simulation.pdfIn PDF document text
    • http://motuvogipe.onlinewebshop.net/87646567489.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/hanuman_vs_mahiravana_full_movie_openload.pdfIn PDF document text
    • https://01d67eed-50ba-4ccb-8f82-c1581f7ed07e.filesusr.com/ugd/e3325f_df785b09f1874b819d488a97f05a4ad8.pdf?index=trueIn PDF document text
    • http://nabukewegurizev.rf.gd/resume_cover_letter_download.pdfIn PDF document text
    • https://bcbc83ff-a82b-4234-bf1d-c69e8cae54d5.filesusr.com/ugd/057c82_5222ded5c3e34a688957a1426acf1abe.pdf?index=trueIn PDF document text
    • http://bidavotajowev.epizy.com/mepivife.pdfIn PDF document text
    • http://kowewewabozete.epizy.com/fourth_grade_math_staar_test_practice.pdfIn PDF document text
    • https://6b137298-3864-41c5-aaa3-11744000c3c2.filesusr.com/ugd/b916f4_f2dfa4579e6c4a16b8d65271253fada1.pdf?index=trueIn 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_off0000ebce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBCE 5232 bytes
SHA-256: fa0c7edd99bb35d0f655c5f692771988bfa63e95d6de326365c73485049e0148
font_01_sfnt_off0000fd94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD94 11008 bytes
SHA-256: 21df6793f86cd3f57b87014c905cfb5c7848edd3dc5462a1e01bf150f86112cd

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