Malicious PDF — malware analysis report

Static analysis result for SHA-256 26980cd6129c9778…

MALICIOUS

PDF

89.5 KB Created: 2021-03-20 02:13:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d46fcb19bb15855f220867eaa29aa94 SHA-1: 1f1eda02ae454d05ae57cb3fde90ba76edbe9d80 SHA-256: 26980cd6129c9778feb09ac27e3143af2213802e5ba012d2587fad3da0a787a1
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a URL that impersonates a printer driver download, suggesting a social engineering lure. While no scripts were explicitly extracted, the PDF structure and embedded URIs indicate an attempt to trick the user into downloading a malicious payload.

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/strik?utm_term=hp+officejet+4500+printer+driver+download+for+mac
    • https://cdn-cms.f-static.net/uploads/4369915/normal_601dbd823fe03.pdf
    • http://raisinsapp.pro/calculus_8th_edition_textbook_solutionsy0t55.pdf
    • http://pupumokenelet.22web.org/is_a_6.5_creedmoor_to_big_for_coyotes.pdf
    • http://benodemutuvi.22web.org/pifezenobapedozixukajo.pdf
    • https://xufujakuzizam.weebly.com/uploads/1/3/5/3/135315974/b5b3b1.pdf
    • http://wimesuzajomos.mypressonline.com/antigona_velez_gratis.pdf
    • https://dojibabebane.weebly.com/uploads/1/3/2/6/132682208/soduwebik-nopup.pdf
    • http://copyrightsupporthelpcenter.com/lenovo_thinkcentre_beep_codes_3-3-3-3rbnw7.pdf
    • https://static.s123-cdn-static.com/uploads/4407991/normal_6006ff7b1f369.pdf
    • https://supogile.weebly.com/uploads/1/3/1/6/131606666/nafuzovulokut_katiradegemas.pdf
    • http://wugegifa.getenjoyment.net/17955967100.pdf
    • http://jawunefuda.mygamesonline.org/xefuxisetotetuvivolol.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/7eefdb6c-0fe9-4724-a638-b53203ae0eb8/ask_the_dust_movie_vs_book.pdf
    • http://wixulolefafela.rf.gd/voice_synthesizer_for_android.pdf
    • http://saripugoxek.rf.gd/maximum_flight_duty_time_easa.pdf
    • https://uploads.strikinglycdn.com/files/d720638a-7a0b-4aec-ab49-d63d20bbcfde/sowilolapitotu.pdf
    • https://uploads.strikinglycdn.com/files/da7eb81c-1389-40c6-b97d-86f1cfc45b24/how_to_turn_off_clean_light_on_cuisinart.pdf
    • http://jezevenakos.myartsonline.com/la_metamorfosis_de_una_madre_libro_gratis.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_off00011f46.bin
7429cb704fadf78c31402d2bed84fde548396fa7a7ce4fa6fb11e1eb04abbf17		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11F46 5668 bytes
font_01_sfnt_off0001329e.bin
4093dbf28086e0af59d0e39523aa637d5af3c45bf0cf60067b7a5cf444f40eda		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1329E 11208 bytes

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