Malicious PDF — malware analysis report

Static analysis result for SHA-256 454da10316f77980…

MALICIOUS

PDF

91.0 KB Created: 2021-06-02 11:07:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: b249d3ea33ae16757161ddb67cd628ec SHA-1: 799546681f99af476d562ad57db4cea406ce48ac SHA-256: 454da10316f779801d4255f7b26849ea0143fc1aa8f290b23ada22897155bab0
126 Risk Score

Malware Insights

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

This PDF document is classified as malicious by ML and ClamAV, indicating a phishing or trojan payload. It contains numerous embedded links, many pointing to disposable hosting services, and a lure related to "apex legends aimbot xbox" to entice downloads. The presence of external URIs and a link farm structure suggests an attempt to distribute malware or redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://chcial.ru/pbw?utm_term=download+apex+legends+aimbot+xbox PDF link annotation
    • https://linepapimufuto.weebly.com/uploads/1/3/1/6/131637640/4132317.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459796/normal_604138455ec54.pdfIn PDF document text
    • https://juwarojolajekol.weebly.com/uploads/1/3/4/1/134108785/7658947.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502178/normal_6057f13848986.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454049/normal_5ff67723a84a1.pdfIn PDF document text
    • https://deperomider.weebly.com/uploads/1/3/4/3/134344929/3959371.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484633/normal_606336588e856.pdfIn PDF document text
    • https://vigijamavo.weebly.com/uploads/1/3/0/9/130968937/lotejamuduvem.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://viluxese.pbworks.com/w/file/fetch/144427386/fijinemavivejajanarenimoj.pdfIn PDF document text
    • http://kolasotosexu.pbworks.com/f/zutodegavoribilugedal.pdfIn PDF document text
    • http://vafobotigef.pbworks.com/f/21670432091.pdfIn PDF document text
    • http://pilujibos.pbworks.com/w/file/fetch/144486792/mimuvuvokufim.pdfIn PDF document text
    • http://lekuzax.pbworks.com/w/file/fetch/144412215/adobe_photoshop_classroom_in_a_book_2021_release_download.pdfIn PDF document text
    • http://wisarazed.pbworks.com/f/2021_printable_monthly_calendar_with_holidays_portrait.pdfIn PDF document text
    • http://supijexed.pbworks.com/w/file/fetch/144446001/atomic_spectra_light_energy_and_electron_structure_lab_answers.pdfIn PDF document text
    • http://bevojoluvu.pbworks.com/f/25365985613.pdfIn PDF document text
    • http://nukuxim.pbworks.com/w/file/fetch/144485523/assassins_creed_3_save_game_file.pdfIn PDF document text
    • http://tisowowuduwe.pbworks.com/w/file/fetch/144417654/novela_os_10_mandamentos_cap_60.pdfIn PDF document text
    • http://xalomuzavege.pbworks.com/f/which_greek_god_is_the_most_powerful.pdfIn PDF document text
    • http://sufizilofab.pbworks.com/f/what_walmart_is_open_now_near_me.pdfIn PDF document text
    • http://jajafad.pbworks.com/f/35150296826.pdfIn PDF document text
    • http://liwuvedesisu.pbworks.com/w/file/fetch/144484419/85617444054.pdfIn PDF document text
    • http://dekokos.pbworks.com/w/file/fetch/144416838/zudarilotunaketa.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_off0001264d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1264D 5484 bytes
SHA-256: c9d6899ebcd9abc1e8e89e3bd3bfb743592c2243dd12daaf1d7bdae4806b89f6
font_01_sfnt_off000138fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x138FD 11252 bytes
SHA-256: 0d544c05a255f8f3b67347a163554eef23ec3b638999f8c0a2600687a31c5d12

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