Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ba40c6a8118a48b…

MALICIOUS

PDF

86.7 KB Created: 2021-04-04 05:29:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 88ec36c0fe32e3ca5300620548b4ffe6 SHA-1: 56845f32b1d84589554505a01290e50af33013db SHA-256: 5ba40c6a8118a48b47d22cbf4eaaa854d2199ec7413f507b8d9f1dceceb4399b
126 Risk Score

Malware Insights

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

This PDF document contains numerous links to external websites, many of which are hosted on disposable domains, suggesting a link farm or phishing attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to "waycross middle school waycross georgia" to drive traffic to these malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://nipisod.ru/wix?keyword=waycross+middle+school+waycross+georgia PDF link annotation
    • https://wulukisogexoz.weebly.com/uploads/1/3/1/4/131438059/tepufupubuleme-tupivapazaza-mimutunetorabiw-pogamerokokol.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444374/normal_60126597d1c50.pdfIn PDF document text
    • http://gobotujadix.22web.org/kixatopitesagi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487903/normal_5fe98cb3c29bc.pdfIn PDF document text
    • https://vidafipi.weebly.com/uploads/1/3/1/6/131636743/9185852.pdfIn PDF document text
    • https://bemezonef.weebly.com/uploads/1/3/5/3/135389856/8707847.pdfIn PDF document text
    • http://kadesevi.iblogger.org/tevotadukerosan.pdfIn PDF document text
    • http://jolijivik.scienceontheweb.net/zitavivulisurute.pdfIn PDF document text
    • https://tokokurud.weebly.com/uploads/1/3/4/7/134744431/6461413.pdfIn PDF document text
    • https://fejejupusojovif.weebly.com/uploads/1/3/1/4/131483068/vakiwafimisot.pdfIn PDF document text
    • http://vizojuzoninunoz.scienceontheweb.net/7851951308.pdfIn PDF document text
    • http://welogotodamiris.22web.org/84580350154.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488336/normal_602d4bfbbda34.pdfIn PDF document text
    • http://kulanefimolon.mypressonline.com/best_free_crossfit_programming.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367283/normal_5fd67778da789.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fasokefukolu.epizy.com/88388327256.pdfIn PDF document text
    • http://luledajosa.epizy.com/hp_laserjet_pro_400_printer_m401n_specifications.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc317e5e-39ca-486d-93ba-34fe900f8445/why_is_my_news_feed_on_facebook_limited.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93592d8c-8603-468e-a1ea-d754dd15d80a/innova_3100_code_reader_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/pokixovuxik/mizibenin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b481f6a6-93a5-4000-859a-7a14cb2f2017/how_much_do_global_marketing_managers_make.pdfIn PDF document text
    • https://s3.amazonaws.com/somisilegex/guide_des_oiseaux_de_france.pdfIn PDF document text
    • https://s3.amazonaws.com/mexijegedakol/65725509931.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5260acd2-d138-40a2-a8e0-51156575a3b0/black_and_decker_bc15bd_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1cd2ebb8-7dea-488a-9e01-583c884ef4bb/wujomuw.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000febc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEBC 5560 bytes
SHA-256: 75e85785e8ef3d7266970b16adc8a04bbcb87245e3456a78ae379895e26a11d3
font_01_sfnt_off0001119b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1119B 10944 bytes
SHA-256: bf378c470db28256e9c72b76ef500f8ec6a5c72d7bd2a3f3973f3199f7b2e15a
font_02_sfnt_off0001372f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1372F 16204 bytes
SHA-256: 541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501