Malicious PDF — malware analysis report

Static analysis result for SHA-256 0abb0ce61ae04082…

MALICIOUS

PDF

73.5 KB Created: 2021-03-04 01:31:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: eaef2f78f0134b0132c76e61e77cd496 SHA-1: 6ccfb9ff80f113aa785b62399a1eda5ea713fbb9 SHA-256: 0abb0ce61ae04082c75ee9c450b9bbdc66f9265d28182ea2a356f6c45bb0ddb0
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain. The ML classifier and ClamAV detection strongly indicate maliciousness. The presence of an external URI and embedded URLs suggests a phishing or malware distribution attempt, likely initiated via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jumiwimov.ru/award?keyword=how+is+noise+reduction+rating+calculated PDF link annotation
    • http://bnl-jobs.com/unicorn_comic_stripzs1ye.pdfIn PDF document text
    • http://itdiscount.info/inside_out_festival_2020sl6sj.pdfIn PDF document text
    • http://sportplays.ru/ruzomosaqi0b9.pdfIn PDF document text
    • http://fumigatoff.online/what_is_the_best_photoshop_program_for_beginnerswckn4.pdfIn PDF document text
    • http://nemosixumeki.mypressonline.com/cfa_program_curriculum_2020_level_iii.pdfIn PDF document text
    • http://pumorux.medianewsonline.com/vemubuneni.pdfIn PDF document text
    • http://gekifek.scienceontheweb.net/dokebemuvu.pdfIn PDF document text
    • http://yazansoft.com/akhiyan_song_of_mirza_movie_freeza620.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/tezofuretejom/starting_out_with_java_from_control_structures_through_objects_whats_new_in_computer_science.pdfIn PDF document text
    • https://s3.amazonaws.com/lakadutof/harman_p68_pellet_stove_status_light_blinking_5_times.pdfIn PDF document text
    • https://s3.amazonaws.com/wunojipu/53039784908.pdfIn PDF document text
    • https://s3.amazonaws.com/davolazupivowi/gototraining_user_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/jolunenafobuw/46810043753.pdfIn PDF document text
    • https://s3.amazonaws.com/vuforewebub/maplestory_come_find_me_cheat_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/xoxaneral/vapewokatisez.pdfIn PDF document text
    • https://s3.amazonaws.com/pezofut/balance_sheet_format_of_companies_act_1956.pdfIn PDF document text
    • http://siwemoxoxawevuv.atwebpages.com/boy_scouts_store_dallas.pdfIn PDF document text
    • https://s3.amazonaws.com/najubu/59985413045.pdfIn PDF document text
    • https://s3.amazonaws.com/jarirotexab/old_school_runescape_fishing_guide_members.pdfIn PDF document text
    • https://s3.amazonaws.com/rodigapigeta/us_passport_form_ds-_5504.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_off0000e39c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE39C 5160 bytes
SHA-256: 3458dfe935d239b481f478734eb11143c577dbcbd28c1f6ba87c7f30aba6560d
font_01_sfnt_off0000f548.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF548 10440 bytes
SHA-256: 41a50f08c5e589ccb71da10310c2b243984d394252091972e30bc1f12dce96e1

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