Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a44ff299f05d95e…

MALICIOUS

PDF

95.9 KB Created: 2021-04-15 13:26:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d3be4e0f33e5c6f41eb8e7929a8b5fdb SHA-1: 77316c7064697f99e6fd8e276d8fef971e0c6a3a SHA-256: 0a44ff299f05d95ea53ecaf2ce8a14f57072e912a02d8966a798a563b5bfd5f1
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 result for a movie, likely to trick the user into clicking it. ClamAV detection and ML classification strongly indicate malicious intent, classifying it as a phishing trojan. The presence of embedded URLs and the overall structure suggest a phishing attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://kuzutuzo.ru/strik?utm_term=disney+christmas+carol+movie+jim+carrey
    • https://cdn.sqhk.co/josurowelimu/cSgfgd8/dowivibimup.pdf
    • https://cdn.sqhk.co/feletitami/oiaAjgR/sinister_night_horror_survival_adventure_games_ps4.pdf
    • http://jojazinex.mygamesonline.org/after_effects_keyboard_shortcuts.pdf
    • https://cdn.sqhk.co/masamiwe/hbIhigP/fuberozavavukinevosalab.pdf
    • https://cdn.sqhk.co/fujonexa/0jpfvTu/hit_and_run_lanarkshire.pdf
    • http://saporik.scienceontheweb.net/sosamemis.pdf
    • https://cdn.sqhk.co/lukavago/gdDgiYo/audited_financial_statements.pdf
    • https://cdn.sqhk.co/tusumawibe/ij2Z3O9/bukisodejoras.pdf
    • https://cdn.sqhk.co/nedovipirumu/A1dgehh/tamuzisogamis.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/toguvaju/toy_defense_fantasy_apk.pdf
    • http://vovakupalujum.onlinewebshop.net/honda_harmony_1011_deck_belt_size.pdf
    • https://uploads.strikinglycdn.com/files/607df693-88fe-4e10-99f6-1af6d40544f2/do_african_wild_dogs_eat_giraffes.pdf
    • https://uploads.strikinglycdn.com/files/bf07bf8d-e5f8-4e81-baa5-15297f6aedc8/kinobody_diet_example.pdf
    • https://s3.amazonaws.com/donukadizolin/wevulanuwurufubutifamizal.pdf
    • https://uploads.strikinglycdn.com/files/97d9ff00-742b-4de4-ba79-7686d889aa22/lalixepudoseweneba.pdf
    • https://uploads.strikinglycdn.com/files/ed4a4821-08bb-4869-9017-3087c59edec4/traxxas_summit_1_16_servo_upgrade.pdf
    • https://uploads.strikinglycdn.com/files/337f3505-5f41-4e49-94e9-1fdfbdb34755/bexatusematule.pdf
    • http://zakexukosogu.atwebpages.com/cancer_de_cervix_definicion.pdf
    • https://s3.amazonaws.com/kosamupim/86386659663.pdf
    • https://s3.amazonaws.com/jinabom/scoliosis_exercise_program.pdf
    • https://s3.amazonaws.com/geraromu/crock_pot_roast_cooking_instructions.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_off00013753.bin
a5cc0fba52c781b3ac8b83cbedc1d351413fe3dca97e3f6896b2ae322559a382
pdf-font-stream PDF embedded font (sfnt) at offset 0x13753 5276 bytes
font_01_sfnt_off00014931.bin
b31974a0d49916c4f1eb363194d3924cb88dabc41351c513a69201c59dec19d4
pdf-font-stream PDF embedded font (sfnt) at offset 0x14931 11584 bytes