Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a3e0e99fd0bdb64…

MALICIOUS

PDF

78.7 KB Created: 2021-04-06 12:04:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 169a9754f798f9cb7f5351a604b36326 SHA-1: aff7edffca520104cbb2273ca264f105174506d5 SHA-256: 2a3e0e99fd0bdb6494b03448abf4706c9e1df7ed9a96fc2a645cbf70585dd7f2
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, likely as part of a phishing campaign.

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://pelibifir.ru/wix?keyword=arctic+ice+coverage+march+2019 PDF link annotation
    • https://cdn.sqhk.co/jozazixefuf/gTa2Rc3/dinosaur_zoo_game_video.pdfIn PDF document text
    • https://cdn.sqhk.co/rodofusavivi/ihgjVjh/80948212381.pdfIn PDF document text
    • https://cdn.sqhk.co/rivotoxupow/idyR1ii/95362895145.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/rurosaveruk/baahubali_2_south_indian_movie.pdfIn PDF document text
    • http://sozidaxaguzir.rf.gd/50418643555.pdfIn PDF document text
    • https://s3.amazonaws.com/rijaliwiguvex/twitter_videos_won_t_play_on_android.pdfIn PDF document text
    • https://s3.amazonaws.com/lorugipopuxe/hpu_ba_final_date_sheet_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/son_necesarias_las_purinas_y_pirimidinas_en_la_dieta.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2503bab-022b-491a-bbdb-59c3a2ec5d95/47627977441.pdfIn PDF document text
    • https://s3.amazonaws.com/rowubunak/biwipexezonivikimimeritek.pdfIn PDF document text
    • https://s3.amazonaws.com/wajufifenoxuj/arcgis_free_for_students.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5cc77e8c-c498-45c4-b6f2-265138cb8018/what_to_do_if_roku_remote_doesnt_work.pdfIn PDF document text
    • https://s3.amazonaws.com/tunenijexe/girarixojitamojadititugib.pdfIn PDF document text
    • http://gimuluma.epizy.com/xovegakazofizujujumanegum.pdfIn PDF document text
    • http://wasaxotudulolo.epizy.com/59057589617.pdfIn PDF document text
    • https://s3.amazonaws.com/kexamoxusinixu/satitegarurofed.pdfIn PDF document text
    • https://s3.amazonaws.com/savifin/pobijurarelikewa.pdfIn PDF document text
    • https://s3.amazonaws.com/godoremitiwuja/dixurefilirabolirov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7675937-434c-4a63-ab4a-65ddf569afd4/most_common_basic_words_in_english.pdfIn PDF document text
    • https://s3.amazonaws.com/norozovijalu/5774929667.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f457.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF457 5532 bytes
SHA-256: 7bf0a385dc98d22de7f0619903d795b93e06bfd0d3a94f80b1c259d1c3805b87
font_01_sfnt_off00010713.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10713 10692 bytes
SHA-256: 0d10116241fe9f775400a78f228aa6b2b1334c485e7c5b56e7cf7cf94ace05d6

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