Malicious PDF — malware analysis report

Static analysis result for SHA-256 0734fab9abf464fd…

MALICIOUS

PDF

83.7 KB Created: 2021-04-12 00:37:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ddf31cd10a25636604601bdc7f8f6846 SHA-1: 36c565ff17424dcc36c9bd2c6e1dbda9a05e8819 SHA-256: 0734fab9abf464fdaab9b36f384eae68f31f17b958ebd776f385d5cbcba7fd96
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 presence of external URIs and the overall classification suggest an attempt to exploit the user's interest in firearm accessories to redirect them to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://zajinet.ru/strik?utm_term=ar+15+10+round+mag+coupler
    • http://istlan.fun/mesa_boogie_dual_rectifier_roadster_2x12hj7r1.pdf
    • http://thelandofbadideas.com/jitakiwepiwudunugaxufrrm.pdf
    • http://getsalon.xyz/bootstrap_glyphicon_icontompl.pdf
    • http://seplafond.xyz/american_red_cross_volunteer_near_meosoo7.pdf
    • http://islta.fun/gallopade_8th_grade_social_studies_answers8188u.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/13ef6ca3-a569-43a5-a52a-08681d56553d/remington_700_stock_upgrades.pdf
    • https://s3.amazonaws.com/davolazupivowi/alfred_piano_books_for_adults_level_1.pdf
    • https://uploads.strikinglycdn.com/files/3f00a6c7-57cc-4ed9-bcfd-c88468e79fbe/twilight_struggle_realignment_rolls_rules.pdf
    • http://putiremupupunis.epizy.com/fallout_4_pc_item_codes_guide.pdf
    • https://uploads.strikinglycdn.com/files/b7192f5e-a192-4dac-a8db-d1596d4f0ba2/7336372164.pdf
    • https://s3.amazonaws.com/gaxuremewuger/laludaxizaraf.pdf
    • http://wupafar.rf.gd/static_gk_capsule_for_bank_exams.pdf
    • https://s3.amazonaws.com/gumegulaxi/70731571134.pdf
    • https://uploads.strikinglycdn.com/files/5f5bea0c-d7d9-4389-abcd-94d2417241c5/67843773788.pdf
    • https://uploads.strikinglycdn.com/files/719a2a76-850c-417c-8ac5-593268ea2b1a/fiio_x1_2nd_gen_manuale_italiano.pdf
    • https://uploads.strikinglycdn.com/files/c98c570e-d807-4888-86a0-ebb2068004ed/modelo_de_inventario_en_excel_entradas_y_salidas.pdf
    • https://s3.amazonaws.com/laradusa/boxing_motivation_video_song.pdf
    • https://s3.amazonaws.com/muvazi/prison_officer_exam_2018_answer_key.pdf
    • http://misukejijixuke.epizy.com/mitutoyo_cd-_6_asx_manual.pdf
    • https://s3.amazonaws.com/fezenur/65409420229.pdf
    • http://dalotidel.epizy.com/52415456970.pdf
    • https://s3.amazonaws.com/rubidokezive/all_jazz_real_book_bb.pdf
    • https://uploads.strikinglycdn.com/files/3d5fad77-220a-4212-9109-e4f2da858925/what_are_some_latin_words.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_off00010642.bin
6cf56cc62d73fe68e19bcb3e168b4e6e10c8a2bd5be0c2893d564876b2374831		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10642 5520 bytes
font_01_sfnt_off000118fa.bin
33d19dd7fe8cb5d5e1cf90eca45ddfe4ad4a5481f1bbdd80fca60d093f03feff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x118FA 11444 bytes

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