Malicious PDF — malware analysis report

Static analysis result for SHA-256 a13de382fccb8d4d…

MALICIOUS

PDF

71.8 KB Created: 2021-02-28 18:18:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 39f68d03792022eace0110f38f7cc581 SHA-1: 1a244a309939a315b5584724d21c490869465371 SHA-256: a13de382fccb8d4dc7b0b17ad49eae355cc6fcfbc34daa8c1a3487c897d447e1
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://soxebez.ru/award?keyword=advanced+computer+networks+course+outline PDF link annotation
    • http://jumbochecker.com/novewafo0yhbg.pdfIn PDF document text
    • https://bevarolemi.weebly.com/uploads/1/3/4/6/134685224/3843133.pdfIn PDF document text
    • http://boost-store.net/hakuouki_anime_english_dub_episode_302xzo.pdfIn PDF document text
    • https://mirijanonukuzo.weebly.com/uploads/1/3/2/7/132740352/baa84.pdfIn PDF document text
    • https://xodozevonewoze.weebly.com/uploads/1/3/1/3/131384462/womuganiseduba.pdfIn PDF document text
    • https://parukiwodisurup.weebly.com/uploads/1/3/4/4/134455528/6202436.pdfIn PDF document text
    • https://bukalejobiwasek.weebly.com/uploads/1/3/1/4/131409200/4018538.pdfIn PDF document text
    • http://likedizar.medianewsonline.com/woxinedurul.pdfIn PDF document text
    • https://roribevewo.weebly.com/uploads/1/3/4/5/134502196/nuludenasaki.pdfIn PDF document text
    • https://taxupati.weebly.com/uploads/1/3/4/8/134891344/segagowarowe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zuputes.atwebpages.com/19534425817.pdfIn PDF document text
    • https://s3.amazonaws.com/wegugus/pittsburgh_steelers_injury_report_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/wokesabisevo/luxoburu.pdfIn PDF document text
    • https://s3.amazonaws.com/jafujasiwetid/chess_3d_apk_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/pazerogasarinu/difoxidex.pdfIn PDF document text
    • http://pikubub.onlinewebshop.net/how_to_reset_plantronics_voyager_legend.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_off0000db1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB1E 5424 bytes
SHA-256: 0d37b79a1e79ad1e5a5bdf5b5abba399bb2bccd77b97746c26d2623dcdf09490
font_01_sfnt_off0000ed90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED90 10724 bytes
SHA-256: 6b37e814e96c9731bbe9bddd38dfb4b753c1f33896c81da1d3e9cf838ea5e183