Malicious PDF — malware analysis report

Static analysis result for SHA-256 e83484efdc2f5175…

MALICIOUS

PDF

42.2 KB Created: 2020-08-11 13:15:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9d21bdb488e88de3ba42b051869b7307 SHA-1: 85f1bbbafa2cffd022747e4b3cfe93ddc2d9e3d1 SHA-256: e83484efdc2f517551841aac9dbd5b36115ea65afb50f5a16115af0def5e9115
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, which is characteristic of a link farm or SEO manipulation tactic. One of these links, https://ttraff.cc/wb?keyword=terapia%20de%20juego%20gestalt%20pdf, is identified as a malicious redirector. The ML classifier also strongly indicated maliciousness. No scripts were extracted, limiting the ability to determine further payload delivery or execution.

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/wb?keyword=terapia%20de%20juego%20gestalt%20pdf In PDF document text
    • http://piwusafa.fgohio.com/uploads/1/3/0/7/130776326/b72409ecb6ef932.pdfIn PDF document text
    • http://files.misswcourtroom.com/uploads/1/3/1/3/131383823/lekop-xugoligazi-fuzulabap-lupuwep.pdfIn PDF document text
    • http://gozim.philipsburgbrew.com/uploads/1/3/1/3/131383483/4971814.pdfIn PDF document text
    • http://files.thekookas.com.au/uploads/1/3/0/7/130775245/320346.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/1/0429/0222/5059/files/vukuresufowozogexazo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7995/8679/files/tupodav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0962/1665/files/5498661292.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9645/7884/files/69571497416.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1500/1496/files/jukutiboleruripadajaleso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/1402562920.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8039/3639/files/48223069856.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7853/3791/files/beach_volleyball_score_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2439/0056/files/27683289956.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0041/3856/files/12205639360.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1582/2747/files/materialismo_dialectico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9562/1786/files/balixubukumof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8031/1203/files/check_your_aviation_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8721/7319/files/business_report_writing_books.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_off0000660b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x660B 5232 bytes
SHA-256: ba382224989850db6e444b4ead4705cbbe649adee7a3c505902515d5b3473c24
font_01_sfnt_off000077ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77EC 10512 bytes
SHA-256: cfd426b6e0d9308ce42095b6e70affb4a969c6ad8432540d9ff6abf52f867e49

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