Malicious PDF — malware analysis report

Static analysis result for SHA-256 1aba843c91354b4b…

MALICIOUS

PDF

74.3 KB Created: 2021-03-18 13:33:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4719e95fccfbb3e7ebf4a9e2b3d1ec8a SHA-1: 94184eaf67e8344c98ce10780ffc69a7dd051624 SHA-256: 1aba843c91354b4bbd93bfb128fa64076ec384905a1eca2d5ab2de8d2113c544
96 Risk Score

Malware Insights

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

The PDF document contains a lure related to 'storytown grade 2 teacher edition' and embeds a URL pointing to a suspicious domain. ClamAV and ML classifiers strongly indicate maliciousness, consistent with a phishing or trojan delivery attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious content, likely for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://lozipotod.ru/wix?keyword=storytown+grade+2+teacher+edition
    • https://cdn.sqhk.co/seworani/cgUIu7I/8d_music_player_pro_apk.pdf
    • https://static.s123-cdn-static.com/uploads/4454671/normal_6001c157b6b59.pdf
    • http://tadugebakonuged.getenjoyment.net/c_primer_6th_edition.pdf
    • https://static.s123-cdn-static.com/uploads/4475872/normal_5feec5ec6f6a6.pdf
    • https://cdn-cms.f-static.net/uploads/4454995/normal_600bd65a4d44f.pdf
    • http://nuxuzuruguli.mypressonline.com/wedding_ceremony_program_template.pdf
    • http://pakunobun.getenjoyment.net/how_to_fix_surging_snowblower.pdf
    • http://milatepe.medianewsonline.com/20092826605.pdf
    • http://rogevunesopu.medianewsonline.com/how_to_draw_manga_girl_poses.pdf
    • https://cdn.sqhk.co/wanukawuwota/GijcfTW/kuxidogenabaxigawijuretar.pdf
    • https://cdn-cms.f-static.net/uploads/4481819/normal_60342ff3d1a88.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://rigemileluzed.epizy.com/kuridedagodevixe.pdf
    • http://jopinewo.epizy.com/how_to_help_knee_pain_in_bed.pdf
    • https://uploads.strikinglycdn.com/files/9a086bcf-c168-445a-ac94-d78c868a8ff4/the_drama_of_scripture_act_5_summary.pdf
    • http://vilatelisoto.onlinewebshop.net/meliwajesixanalobefapil.pdf
    • http://gagolabirej.atwebpages.com/50671976561.pdf
    • http://nowaginog.epizy.com/anestesia_raquidea_efectos_secundarios.pdf
    • https://uploads.strikinglycdn.com/files/f71769fe-a27d-47b6-9c8f-3eb770a4dae5/zafawabuxisenok.pdf
    • http://dinonikof.epizy.com/como_ganar_amigos_e_influir_sobre_las_personas_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_off0000e428.bin
50cf9b23595ce4ffbe5fb6756e96fd39e60b624d709cf00202501cefbe017bf6
pdf-font-stream PDF embedded font (sfnt) at offset 0xE428 5420 bytes
font_01_sfnt_off0000f6a9.bin
89239309adcb402580501d52dec60e7009a085a69aea11942500fc0fe4674839
pdf-font-stream PDF embedded font (sfnt) at offset 0xF6A9 10744 bytes