Malicious PDF — malware analysis report

Static analysis result for SHA-256 6888451323fbdff2…

MALICIOUS

PDF

91.7 KB Created: 2021-03-29 10:29:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: aea76fd81b0124f9f28b6e6f6ed794c9 SHA-1: 27101e8cd6f04c906063ce5b68c8852f650d32b0 SHA-256: 6888451323fbdff2c194c6c5e40970559de3d3f9c7f28a943ed23e186fcbd3d5
96 Risk Score

Malware Insights

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

The PDF file contains a heuristic indicating an external URI, specifically pointing to 'https://dugedepap.ru/award?keyword=base64+pdf+to+image+javascript'. This URL is presented in a context that mimics a search result, suggesting a phishing or social engineering attempt to direct the user to a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://dugedepap.ru/award?keyword=base64+pdf+to+image+javascript PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4375503/normal_6051ad36288d0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391623/normal_60012721476e2.pdfIn PDF document text
    • http://souve.me/flowers_in_the_attic_2014_age_ratingz4m82.pdfIn PDF document text
    • http://banquepopulaire-fr.org/70629681702y00gr.pdfIn PDF document text
    • http://youla-24.cc/kuxurafomazi9pjd6.pdfIn PDF document text
    • http://oneitstore.pro/how_to_repair_microwave_turntableycioe.pdfIn PDF document text
    • http://zapitexidij.mypressonline.com/sumitafi.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/mesotodimus/bicycle_card_games_full_version.pdfIn PDF document text
    • https://s3.amazonaws.com/zabejuvijolu/can_u_lose_weight_doing_couch_to_5k.pdfIn PDF document text
    • https://s3.amazonaws.com/julexekubaj/american_pie_1-_8.pdfIn PDF document text
    • http://gipebevu.atwebpages.com/mesa_de_som_yamaha_mg166cx_usb_manual.pdfIn PDF document text
    • http://xirozaza.onlinewebshop.net/7350934542.pdfIn PDF document text
    • https://s3.amazonaws.com/pulujolatepuv/nanipuxalaratifowazeru.pdfIn PDF document text
    • https://s3.amazonaws.com/fejenijovekozu/biological_classification_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/xezonijida/estudio_del_trabajo_2_temario_tecnologico.pdfIn PDF document text
    • https://s3.amazonaws.com/dutimajizowa/zonakuvuretopiri.pdfIn PDF document text
    • https://s3.amazonaws.com/wofaxil/nifetiduz.pdfIn PDF document text
    • https://s3.amazonaws.com/lorerexeg/char_broil_electric_grill_parts.pdfIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/diferencias_entre_los_animales_y_los_humanos_para_nios.pdfIn PDF document text
    • https://s3.amazonaws.com/mubefula/beautiful_mind_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/whats_the_most_accurate_bible_in_the_world.pdfIn PDF document text
    • https://s3.amazonaws.com/papuja/newegaraxuwani.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001117e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1117E 5868 bytes
SHA-256: 1589a1c95137ba5d557e823cf7b42c6f72d97162193821128a75cd97ed8eb1e4
font_01_sfnt_off00012578.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12578 6520 bytes
SHA-256: 3b4f81cdaa7b44726c8a9eb1fcf18f478e11f7a76d11411e4911e09b85c4d164
font_02_sfnt_off0001376c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1376C 12300 bytes
SHA-256: 680cacd753afa12a5aa66c6cb907aa7e59538e23d0862e038df9ef37cfcf7978

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