Malicious PDF — malware analysis report

Static analysis result for SHA-256 a050b8a0af0e872b…

MALICIOUS

PDF

82.5 KB Created: 2021-04-08 03:56:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 27fc71729ba1f088a888d483d1a20c0e SHA-1: 52bce94886b2de7bcc6c28e0046ea94c11e162a7 SHA-256: a050b8a0af0e872b241e68a1fe19ad79632ead10dfde505c9a0410af724b09bd
76 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file uses an image lure to redirect users to a malicious URL, masquerading as a 'call center script template word'. The ML classifier strongly indicates maliciousness. While no scripts were directly extracted, the presence of embedded URLs and the heuristic firings suggest a phishing or social engineering attack aimed at enticing users to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/123?utm_term=call+center+script+template+word PDF link annotation
    • http://gavediteriremuv.medianewsonline.com/catalogo_ngk_mexico.pdfIn PDF document text
    • http://it50discount.pro/zusatuvetobakasomowumola1lixg.pdfIn PDF document text
    • http://juwoniki.getenjoyment.net/65339524414.pdfIn PDF document text
    • http://wonder-ita.space/65829172402j9lom.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445750/normal_5fd97e48037b0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463554/normal_6052405ceb116.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489615/normal_6066b324758c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409118/normal_606c7ffe08bc9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421050/normal_604685403ddec.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://guxovoxed.rf.gd/guilty_crown_lost_christmas_ost.pdfIn PDF document text
    • https://s3.amazonaws.com/bipepezuwed/blunt_chest_trauma_management_guidelines.pdfIn PDF document text
    • http://fenulujexita.epizy.com/sositev.pdfIn PDF document text
    • https://s3.amazonaws.com/goneduzum/dslr_beginner_guide_nikon.pdfIn PDF document text
    • https://s3.amazonaws.com/bodajaku/zagg_rugged_book_pro_wont_turn_on.pdfIn PDF document text
    • http://kozogasivufi.myartsonline.com/39802333490.pdfIn PDF document text
    • https://s3.amazonaws.com/juzewojavomofew/94863332475.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010614.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10614 5216 bytes
SHA-256: da89362a430e1c3520c184ff2b18cbb353bcfb4b96c5a38f5c7788b01f03ccac
font_01_sfnt_off000117c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117C7 10968 bytes
SHA-256: efec650d0efd1376ae209a9436550975a45237a4ca8ef883e7b7f8d79958840e

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