Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ab38ab9778ac991…

MALICIOUS

PDF

76.9 KB Created: 2021-03-15 16:31:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: f16b38cc6fc90cec5e29a96b3726c593 SHA-1: 47897227ea9534c46fff9bb00952ee61ebd6d2e5 SHA-256: 5ab38ab9778ac99191d9b72df6356c85b6eef8266933042c5f3e6f88befc1454
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL and numerous other suspicious URLs suggest a phishing or credential harvesting attempt. The document body, though heavily obfuscated, contains elements that, combined with the heuristics, point towards a lure to a malicious website.

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://baarspo.ru/wix?keyword=5th+grade+social+studies+unit+3 PDF link annotation
    • http://conicppjry.bid/9631213978xka84.pdfIn PDF document text
    • http://rezanufeku.mygamesonline.org/club_car_parts_online_australia.pdfIn PDF document text
    • http://fawikenaxalu.scienceontheweb.net/90059336891.pdfIn PDF document text
    • https://cdn.sqhk.co/lukulobu/Khi7ghr/guidebook_publishing_reviews.pdfIn PDF document text
    • http://xitimudajejo.mywebcommunity.org/anestesia_raquidea.pdfIn PDF document text
    • http://bred-enligne.com/pinocchio_picture_story_book8c52c.pdfIn PDF document text
    • http://job-finder.space/apex_tv_how_to_change_input3nic9.pdfIn PDF document text
    • http://intekzafast.online/fosuxokosinumonepaloxffvu9.pdfIn PDF document text
    • http://bidimiw.sportsontheweb.net/vamebezeg.pdfIn PDF document text
    • https://cdn.sqhk.co/bitaxukezor/a9jekjc/crowded_house_albums_amazon.pdfIn PDF document text
    • http://tesar-krd.ru/learn_how_to_draw_anime_for_beginnersyut3q.pdfIn PDF document text
    • http://dosijefa.mypressonline.com/how_to_program_dish_remote_to_hopper_with_sling.pdfIn PDF document text
    • http://solusaxisabo.scienceontheweb.net/jumperoo_fisher_price_rainforest.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bumejefivoxigo.myartsonline.com/70024848249.pdfIn PDF document text
    • https://s3.amazonaws.com/sutawowirosuvuv/14695611178.pdfIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/28784175594.pdfIn PDF document text
    • https://s3.amazonaws.com/jumedemimo/isometric_performance_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/zevutebulaworel/37051714867.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzumeb/why_a_fridge_stops_cooling.pdfIn PDF document text
    • https://s3.amazonaws.com/faduxodiwo/cue_sheet_editor.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_off0000eebe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEBE 5392 bytes
SHA-256: 2dbb2add495f404667204d2fc93cc2e88518a473da4085b8753cb3d53a489446
font_01_sfnt_off00010111.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10111 10704 bytes
SHA-256: 093788bb52e64481fddcc06e952835847cad686620c2930c387d25e32b563bbb

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