Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3d8c666060e8213…

MALICIOUS

PDF

114.5 KB Created: 2021-03-27 15:54:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 30f6bd58a3104babf49beb2535b00be0 SHA-1: 016757024a4a7913575292db98812304be22f653 SHA-256: b3d8c666060e8213d1edfd553a682e0187ad0b3f14c0abdc3c75cb8dac73eb00
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL, 'https://jumiwimov.ru/wix?keyword=fondue+13+word+trek+answers', is presented as the primary lure, suggesting a phishing or scam attempt. Although no scripts were explicitly extracted, the PDF structure and the presence of external URIs are indicative of a malicious document designed to redirect users to a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jumiwimov.ru/wix?keyword=fondue+13+word+trek+answers
    • https://cdn-cms.f-static.net/uploads/4454672/normal_600e387a03402.pdf
    • https://cdn.sqhk.co/jivazufevi/f7if7C7/2019_can_am_defender_hd5_specs.pdf
    • https://cdn.sqhk.co/zoluxoni/yIjdCif/dreamer_supertramp_chords_piano.pdf
    • http://korsabarca.com/free_online_reading_worksheets_for_4th_gradedo0wq.pdf
    • https://static.s123-cdn-static.com/uploads/4391909/normal_5fc73f557f122.pdf
    • https://cdn-cms.f-static.net/uploads/4402960/normal_5fe69ae74f394.pdf
    • https://cdn.sqhk.co/moleselofa/6xIhfMl/xufujibigeruzu.pdf
    • http://sayseedokg.com/2._7_factoring_perfect_square_trinomials_answerslycz2.pdf
    • http://bovewitavivebu.getenjoyment.net/are_baby_g_watches_unisex.pdf
    • https://cdn.sqhk.co/tarekekog/Biigeic/31361945697.pdf
    • https://cdn.sqhk.co/favosejo/mTaXjcH/gapezozaj.pdf
    • http://wazepewazivulil.mywebcommunity.org/cost_accounting_foundations_and_evolutions_9th_edition.pdf
    • http://rating-bookmaker.ru/dimegazijarozinefaguihqie.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/92bae931-a90b-4c55-a74c-2b8750f4334a/vatuvujewujesuvutegulen.pdf
    • https://uploads.strikinglycdn.com/files/c1d78143-50df-4c28-810f-084f0758e63d/the_telomerase_effect_driven.pdf
    • https://uploads.strikinglycdn.com/files/84c666db-0786-41bf-b94e-69a2c12fde22/fetatifin.pdf
    • https://s3.amazonaws.com/sizadagazagaj/pirate_video_copilot.pdf
    • https://uploads.strikinglycdn.com/files/6fb08aeb-f197-4a80-930e-1b7937d002fa/kisujowojafokuv.pdf
    • https://s3.amazonaws.com/petubapizo/rosogud.pdf
    • https://s3.amazonaws.com/didowugorokirug/javafx_scene_builder_templates.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001865c.bin
214442e2983940e343fa82f01a39749fb6ece3419630f175872774e7862e9e87
pdf-font-stream PDF embedded font (sfnt) at offset 0x1865C 5116 bytes
font_01_sfnt_off000197ed.bin
f9a83847710b976204b5bd796fe5c238823f2da6e35453cc80edef5db2b13ef3
pdf-font-stream PDF embedded font (sfnt) at offset 0x197ED 10804 bytes