Malicious PDF — malware analysis report

Static analysis result for SHA-256 30b6ed628c2ef9af…

MALICIOUS

PDF

43.1 KB Created: 2020-08-04 23:36:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ee90d450b2df713477c716ded331372e SHA-1: 0650f67595c468b8dafb3040c0075d56005980e8 SHA-256: 30b6ed628c2ef9af76cc282599d2c8f48d5e1bb7146c24660639dd42b78975e0
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which are designed to appear as academic resources. These links ultimately redirect to a known malicious domain (ttraff.cc), indicating a phishing or redirection attack. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious redirection scheme.

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://ttraff.cc/pify?keyword=quimica+inorganica+pdf+exercicios In PDF document text
    • http://files.firststagela.org/uploads/1/3/0/7/130776040/9474859.pdfIn PDF document text
    • http://files.cathyibanez.com/uploads/1/3/0/9/130969390/84c1cd.pdfIn PDF document text
    • http://files.mypurplelilyboutique.com/uploads/1/3/1/4/131408056/vokixidu-tekemajofepof.pdfIn PDF document text
    • http://files.graceevangelical.org/uploads/1/3/0/8/130814234/8316525.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5096/4904/files/39260881827.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8620/8406/files/60295022938.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1345/3470/files/cognitive_behavioral_therapy_depression.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7692/0220/files/formato_de_certificado_medico_de_buena_salud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2192/4514/files/mantenimiento_de_calderas_industriales.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2642/2687/files/41384204544.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0277/3156/files/latuluxiliwizivodosow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6678/5949/files/fetekarufujigajozew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4352/0666/files/25005675332.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3327/1191/files/4313030561.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7578/7169/files/simibebivukujugoposuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kaxoku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4244/8295/files/xigowariwoxabogunewun.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 4

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_off000068f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68F1 5572 bytes
SHA-256: 675c611921fca868b9108032f36fa2a490425d8e5643c125972af17766374ecf
font_01_sfnt_off00007bd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BD2 10484 bytes
SHA-256: 4e810b351c7d6d778cbcb4cfdc248c5fc6f75e51f1e37a2c9dc68b8e028276ab

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