Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e8fad10533521cd…

MALICIOUS

PDF

75.6 KB Created: 2021-03-30 11:17:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: de5c9d4ff5a43e973bca56b8bc87e530 SHA-1: 24f9c7364fd693b581e3afff8665719f5c1e74ce SHA-256: 6e8fad10533521cd9f5b1b72c0e8e18087d24c1b8c354d2e1262a35eec3838d7
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a malicious domain, disguised as search results. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the presence of an external URI points to a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://kuzutuzo.ru/wix?keyword=sea+turtle+facts+ks2
    • https://cdn.sqhk.co/bagudivibi/Oia00gf/38695620420.pdf
    • https://cdn.sqhk.co/luwanuriwaba/gihhghf/vampire_the_masquerade_night_road_gameplay.pdf
    • https://cdn.sqhk.co/vedasukuki/pghZHoA/white_bird_screaming_meme.pdf
    • http://fringigejy.site/how_do_i_know_when_my_wahl_clippers_are_charged0c28j.pdf
    • http://xagixowedobosab.medianewsonline.com/perojavinobumababeta.pdf
    • http://pirojibanenuzi.getenjoyment.net/how_to_clear_memory_on_omron_bp742n.pdf
    • http://nature-ital.space/rawufapfm034.pdf
    • http://tuvetetin.22web.org/fafosa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://dilowopuvuzi.rf.gd/2002_ford_focus_repair_manual.pdf
    • https://7f1888b6-cdab-4603-9914-1cf81a8b29aa.filesusr.com/ugd/6846fe_20a106c7089640aabc0e2187fc0871cf.pdf?index=true
    • https://uploads.strikinglycdn.com/files/278f6bae-7233-4e49-84af-37a2e224ac32/kuloxujexunonanumufuk.pdf
    • https://ff0b3df2-dc61-4aeb-9024-93fa9b5bc175.filesusr.com/ugd/aa14a9_dbdff5cc6c03423bb3979d64c98a488f.pdf?index=true
    • http://duzoxugulof.rf.gd/android_messages_auto_archive.pdf
    • http://givetupazowo.onlinewebshop.net/ditogisuwajudav.pdf
    • http://vifidumefitur.atwebpages.com/rivuruxedurirozobuzebori.pdf
    • http://wunekoxewufomaf.epizy.com/cosmetology_written_test_study_guide.pdf
    • https://uploads.strikinglycdn.com/files/c2bcfb5f-827a-4364-8029-180a16d8d2dc/google_search_via_image_mobile.pdf
    • https://uploads.strikinglycdn.com/files/8532a74d-ef54-45c0-abab-c2f07d03c638/lovufuvefupibez.pdf
    • http://fujegite.rf.gd/anatomy_of_the_eyeball.pdf
    • https://uploads.strikinglycdn.com/files/5dd26840-d6a1-45c5-b4dd-076a3aa20f7e/is_jacob_in_the_first_twilight_book.pdf
    • https://e0fa0743-814d-41de-b6a5-47f787911882.filesusr.com/ugd/89d2ef_485401207e82405298eb17117a0a88ab.pdf?index=true
    • 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_off0000ed02.bin
13c72f9d68d251937eb7b82e155f333ae46b4fd35239a0161a0286302ad5c22b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED02 5176 bytes
font_01_sfnt_off0000feab.bin
e0d90b96a72198dea3dfdfa03c8d193f9521d6bf9c4d761e1d12b184303edc1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFEAB 10108 bytes

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