Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdedf2b7b1a4f123…

MALICIOUS

PDF

86.3 KB Created: 2021-03-23 00:22:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8719c90ac592feda998fc00c6a09b2d7 SHA-1: d44f06054a7968c5dce8c8722ba57e1ff0288f92 SHA-256: bdedf2b7b1a4f1235ff5880fe3eeadf6a1ba290b78e466fb05ee12f8754b7964
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that mimics a search query, likely intended to trick the user into visiting a malicious site. ClamAV detection and ML classification strongly indicate malicious intent, specifically phishing. No scripts were extracted, but the presence of an external URI and the nature of the embedded content suggest a phishing attack aimed at credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://nipisod.ru/strik?utm_term=is+newsmax+tv+available+on+comcast
    • http://zenelis.iblogger.org/bible_speech_malayalam.pdf
    • https://cdn.sqhk.co/xizefonuma/fVugeib/puvisajala.pdf
    • https://static.s123-cdn-static.com/uploads/4391642/normal_5ffe483fbb66e.pdf
    • https://static.s123-cdn-static.com/uploads/4408709/normal_600573bd745d4.pdf
    • https://cdn.sqhk.co/bugabowozi/jdiargh/dokizebusovupilukage.pdf
    • https://cdn-cms.f-static.net/uploads/4392656/normal_60234fe519714.pdf
    • https://cdn.sqhk.co/letarezetap/yziikgg/lutejufe.pdf
    • https://cdn-cms.f-static.net/uploads/4414336/normal_604503919f7e4.pdf
    • https://static.s123-cdn-static.com/uploads/4369904/normal_5fc6192d78e95.pdf
    • https://cdn.sqhk.co/gopuxipo/9hhghfn/gogokitamuvefiluz.pdf
    • https://cdn-cms.f-static.net/uploads/4455376/normal_6035947170bdd.pdf
    • https://static.s123-cdn-static.com/uploads/4499656/normal_5fd090ea273b1.pdf
    • https://static.s123-cdn-static.com/uploads/4375083/normal_6001248d6654d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/8de7a46d-b2f2-4c0c-b7b9-8de6a7ec615b/lodoborojomivubizodadidoz.pdf
    • http://fegozewusesib.rf.gd/jalaxiverawoserexalu.pdf
    • https://uploads.strikinglycdn.com/files/e297251a-4871-4346-aaac-742c01590b92/how_to_write_a_book_title_and_author_in_a_sentence_apa.pdf
    • https://uploads.strikinglycdn.com/files/1ce8f151-6da6-478d-b507-3dc342605a65/wufefidugebap.pdf
    • https://uploads.strikinglycdn.com/files/99b9ed1b-aa93-45af-be76-97eb06286eb2/how_to_change_schlage_lock_code.pdf
    • https://uploads.strikinglycdn.com/files/20c31bb6-7e83-4ec1-934d-833360546642/how_much_is_the_drivers_handbook.pdf
    • https://uploads.strikinglycdn.com/files/41162b40-76c5-450a-907c-72010d462035/dukaxapibufajazawofonok.pdf
    • https://uploads.strikinglycdn.com/files/aef8d67a-4301-47ed-8cfb-e3944253e132/oakley_jawbone_original_vs_replica.pdf
    • https://uploads.strikinglycdn.com/files/cae1c2e9-7e71-49ec-b96f-489c6d33dcb7/richard_iii_shakespeare_english.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_off0001144e.bin
c92da7e07ce8cd1577a3efa79803fcd8f535bb513ceec12f9b0fb2871db65d24		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1144E 5144 bytes
font_01_sfnt_off000125d8.bin
1de4030eff7e6106dde617d3796851c6deb865929fd826654257ff183edea7b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x125D8 11164 bytes

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