Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae7273748aa67298…

MALICIOUS

PDF

73.9 KB Created: 2021-03-15 02:07:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 31af226cec7848e450a2719d8bf99b7b SHA-1: 9ed0a050b80440b37d09be20e9d116678e1420f9 SHA-256: ae7273748aa67298f23575a50b519a12bfcfe30402699cdab0865ea5b725e0d6
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, a common tactic for phishing or distributing further malware. The ClamAV detection and ML classifier strongly indicate malicious intent. The presence of embedded URLs suggests the document is designed to redirect users to potentially harmful sites, likely for credential harvesting or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://maypoin.ru/wix?keyword=elton+gregory+middle+school+calendar PDF link annotation
    • http://zituwuwobilel.22web.org/descriptive_statistics_formulas.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426425/normal_601afd0865f6e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475739/normal_601f0d53f2fbe.pdfIn PDF document text
    • http://fezanabuxa.22web.org/information_technology_project_management_kathy_schwalbe_9th_edition.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495849/normal_6000b735e27ed.pdfIn PDF document text
    • http://bijipejip.iblogger.org/meaning_of_businessman.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488570/normal_5fc85487eeb00.pdfIn PDF document text
    • http://tujasumetozuku.22web.org/pesologesasoso.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://f06ae689-34e6-4fd9-b749-a5985747e370.filesusr.com/ugd/4117a9_589d7108cbdd49b5823c908be51e045c.pdf?index=trueIn PDF document text
    • http://rugeritubaduw.epizy.com/3520221246.pdfIn PDF document text
    • https://s3.amazonaws.com/buwosevax/princeton_review_sat_subject_test_chemistry_prep.pdfIn PDF document text
    • https://s3.amazonaws.com/marimejerebo/automatic_call_recording_software.pdfIn PDF document text
    • https://s3.amazonaws.com/pazatuv/tadigekekenajariloso.pdfIn PDF document text
    • https://s3.amazonaws.com/jawusawar/what_items_do_i_need_to_register_my_car_in_florida.pdfIn PDF document text
    • https://s3.amazonaws.com/gomaxod/bagpipe_sheet_music.pdfIn PDF document text
    • https://054d5c26-596f-48a3-87a7-0fc79031e5db.filesusr.com/ugd/599026_a15417176c94457a9f0d8fadaf7a581e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nefagolom/breakout_edu_digital_escape_to_earth_answers.pdfIn PDF document text
    • https://df9240ce-57b4-430e-a582-521170ca5232.filesusr.com/ugd/10b03a_c63c9f1a75214ad0ae061d6d3ef6636c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nopomewegobij/bezubaan_phir_se_lyrics_song.pdfIn PDF document text
    • https://s3.amazonaws.com/lezopobigeza/tinaguguf.pdfIn PDF document text
    • http://gekabogaramal.rf.gd/php_ecommerce_website_project.pdfIn PDF document text
    • https://s3.amazonaws.com/tisegovofu/bugasifaxegepenu.pdfIn PDF document text
    • http://gametasixomuk.epizy.com/62560688522.pdfIn PDF document text
    • https://s3.amazonaws.com/lomiwexuva/cessna_172_maintenance_manual_free.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_off0000deb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEB5 5412 bytes
SHA-256: 9fd14a8d26cbeafcf9424e2cd795fb4946703caf5afe52462995a51ed703099f
font_01_sfnt_off0000f0fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0FB 11408 bytes
SHA-256: f90b05f866529cb3236f022b6f5983e9de140fc614d4b27e1854526e08ad1c47

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