Malicious PDF — malware analysis report

Static analysis result for SHA-256 e38218a7c2e20ebc…

MALICIOUS

PDF

82.9 KB Created: 2021-03-14 00:42:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4b5c91ba9173b357ac1e0531afeaf39e SHA-1: 20f4e4f7321fe9b2f3843c368b198fa7b943d8a2 SHA-256: e38218a7c2e20ebcce1ae6edac9329c31b9642d806ebb1ac8c7cc89bdd6a1c91
86 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains embedded URLs that redirect to websites offering 'riot point codes', suggesting a scam or phishing lure. The heuristic 'ML_NYX_PDF_MALICIOUS' strongly indicates malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URIs point towards an attempt to redirect users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • 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://botokaw.ru/wix?keyword=riot+point+codes PDF link annotation
    • https://cdn.sqhk.co/xetorexevapi/KchijaS/thrift_stores_in_manhattan_beach_ca.pdfIn PDF document text
    • http://bukenisefino.mygamesonline.org/bilogusexoropuxuru.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386081/normal_602a25e3c7778.pdfIn PDF document text
    • https://cdn.sqhk.co/wepugozotap/ck3hgaI/95171126573.pdfIn PDF document text
    • https://cdn.sqhk.co/fafujedajir/l3lsiib/this_war_of_mine_review_pc_gamer.pdfIn PDF document text
    • http://tofoxewesaxizuz.mywebcommunity.org/cbse_syllabus_for_class_6.pdfIn PDF document text
    • https://cdn.sqhk.co/tosuwukiwate/ahhg6jf/83399340203.pdfIn PDF document text
    • http://suwufexez.sportsontheweb.net/58049888553.pdfIn PDF document text
    • http://rabiwitijif.medianewsonline.com/jinibomev.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwefuxab/figICjf/free_notepad_app_for_kindle_fire.pdfIn PDF document text
    • https://cdn.sqhk.co/vedanoderifu/f5ifPPK/64451746322.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374704/normal_602e9f736b155.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366366/normal_602e5b7a8cb9b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365620/normal_602fc62599b7c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://laxolagodofomug.onlinewebshop.net/bahishti_zewar_in_english.pdfIn PDF document text
    • http://vomewudige.atwebpages.com/calendario_zaragozano_2020_gratis.pdfIn PDF document text
    • http://tigedawegexe.rf.gd/calendario_2017_para_imprimir.pdfIn PDF document text
    • http://vuwejamadadodi.epizy.com/jukibixonawotudaziboxome.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_off0000f313.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF313 4736 bytes
SHA-256: 09548729e9685ef89a8554fb77340e9709d1f881dce1db9b1bc802bc75ab84b7
font_01_sfnt_off0001034d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1034D 11072 bytes
SHA-256: 89d7a6a951d241d97332afb0695bf6d525bc2d4f3d0501b1749f478eb45a65bf
font_02_sfnt_off00012936.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12936 16204 bytes
SHA-256: e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15

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