Malicious PDF — malware analysis report

Static analysis result for SHA-256 a040a8f2611eaae2…

MALICIOUS

PDF

81.3 KB Created: 2021-02-18 13:08:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: dc9a22fdf9bdb9f528f8bd30f61957dc SHA-1: 32dc593fad21de22d4774a38d2cadd003b380d54 SHA-256: a040a8f2611eaae261021b9052881495d4e5e625e9aa8cbe768398d03aa1032a
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jottigo.ru/wix?keyword=bose+quietcontrol+30+user+manual PDF link annotation
    • https://cdn.sqhk.co/bajafigotuvi/jdvgjhi/programming_languages_list_and_their_uses.pdfIn PDF document text
    • http://rubezemanugewev.22web.org/adornos_navideos_manualidades_para_la_mesa.pdfIn PDF document text
    • http://rastet-malysh.ru/146188506727sv3m.pdfIn PDF document text
    • https://cdn.sqhk.co/famuxina/jgjghje/71256914729.pdfIn PDF document text
    • https://cdn.sqhk.co/wokinuge/rYLThba/xulenijexulov.pdfIn PDF document text
    • https://cdn.sqhk.co/tazifawixax/ibWidjd/18197551552.pdfIn PDF document text
    • http://biolinkus.me/221843941396b3t9.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/wegugus/google_assistant_apk_free_for_marshmallow.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaporam/emulator_android_amiduos.pdfIn PDF document text
    • https://s3.amazonaws.com/xasovewipeje/wirivuwokapapisim.pdfIn PDF document text
    • http://jifunujori.rf.gd/personality_words_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/xenavuxa/bizzle_songs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zewimu/android_10_samsung_mexico.pdfIn PDF document text
    • http://kimirukuku.epizy.com/duvusuvimawubexed.pdfIn PDF document text
    • https://s3.amazonaws.com/fofeguj/12351129861.pdfIn PDF document text
    • http://jozizirepimetel.rf.gd/27593355068.pdfIn PDF document text
    • https://s3.amazonaws.com/nisiwanolom/cashier_drawer_count_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/gavobawum/22764648806.pdfIn PDF document text
    • https://s3.amazonaws.com/besafefaf/67932016819.pdfIn PDF document text
    • https://s3.amazonaws.com/kofabube/lightroom_presets_for_android_mobile.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_off000101af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101AF 5424 bytes
SHA-256: b143ff2e7f1b79a1b58aa01cbab3876ddb80f7b31680812d382389cb8e3f35c7
font_01_sfnt_off0001140d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1140D 10504 bytes
SHA-256: a3160d4ce772bd8a9bca2aa548431f58db066bb9bc0681439965809f019df9bd

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