Malicious PDF — malware analysis report

Static analysis result for SHA-256 949253a33e40f066…

MALICIOUS

PDF

39.5 KB Created: 2020-11-04 06:01:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-10
MD5: 061977769d6bdee4ee48656ca26fee91 SHA-1: b85bedae48ccfbae8108a6439110f69707095e6f SHA-256: 949253a33e40f066b931b0000d311601ea8317dc7861235b44ccca26b8ee0a30
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to redirector infrastructure and SEO link farms. The document body attempts to lure users with a fake download for an 'Android launcher' to disguise the malicious intent. The primary malicious URL identified is https://cctraff.ru/123?keyword=best+android+launcher+apk, which is flagged as a malicious redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • 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://cctraff.ru/123?keyword=best+android+launcher+apk In PDF document text
    • https://s3.amazonaws.com/nademopor/tabela_periodica_cations_e_anions.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/18909045803.pdfIn PDF document text
    • https://s3.amazonaws.com/bovenotojitowe/kalupokuwovatob.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450140/normal_5fa11dc1809d1.pdfIn PDF document text
    • https://jujodupif.weebly.com/uploads/1/3/2/3/132303189/3452056.pdfIn PDF document text
    • https://s3.amazonaws.com/pizexopenaxu/51240642552.pdfIn PDF document text
    • https://tibulewozimok.weebly.com/uploads/1/3/4/0/134017320/mizafawobadulal_jatijepuzibemu.pdfIn PDF document text
    • https://s3.amazonaws.com/gosete/indian_marriage_biodata_format_download.pdfIn PDF document text
    • https://s3.amazonaws.com/jazofi/53013816366.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/alter_ego_a2_plus_vk.pdfIn PDF document text
    • https://s3.amazonaws.com/dabatisew/lolubupiluvi.pdfIn PDF document text
    • https://s3.amazonaws.com/xebuvuwov/unit_5_test_study_guide_functions_and_linear_relationships_answers.pdfIn PDF document text
    • https://liwevapazu.weebly.com/uploads/1/3/1/0/131071299/figasivumo.pdfIn PDF document text
    • https://s3.amazonaws.com/warapagefasovi/cariotipo_y_cariograma.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00005de0.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00005de0.bin)
    • https://uploads.strikinglycdn.com/files/7ffbf219-8bdf-48bb-947a-a7c0445bfa04/jetokosejozod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d553f51-3abb-49d6-8c72-3bd91c225dc0/mimarasunuzazoforodaku.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 extracted file (font_00_sfnt_off00005de0.bin)

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_off00005de0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DE0 5272 bytes
SHA-256: 57c1a00fd8fc6c7c528803b95aab7dbbc4f652e734a000bf89810dfe33031e77
font_01_sfnt_off00006fc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FC7 9784 bytes
SHA-256: c65c936b935d01417f6cea00ba1eaa631f7886070f534897910d32f8b1de47ed

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