Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b90e9b2fc97c2bc…

MALICIOUS

PDF

38.9 KB Created: 2020-08-16 00:53:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ebb25dcbcdbbfd61122fa15b39e9b594 SHA-1: d495ed7cd8ded0533246e0d412fee9fe0add21fb SHA-256: 0b90e9b2fc97c2bc3b82e48d6221d3ec8d55a47b6f91ca5e1c922d2f8befefc5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with a critical heuristic firing indicating they lead to known malicious redirector infrastructure. The primary redirector URL is https://ttraff.ru/wb?keyword=concepto%20de%20eclecticismo%20pdf. While many other links point to benign Shopify domains, the presence of the malicious redirector and the ML classifier's high confidence score suggest a malicious intent, likely to phish credentials or distribute further malware.

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.ru/wb?keyword=concepto%20de%20eclecticismo%20pdf In PDF document text
    • http://files.shopivybloom.com/uploads/1/3/1/0/131070246/xifisumewalizibelari.pdfIn PDF document text
    • http://files.yunkawasiperu.org/uploads/1/3/1/3/131379612/vizarifogumawov.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/1/0431/7279/0427/files/20119574527.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/32296476761.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4079/2999/files/vepopuxiseduwafunogeretod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9616/9886/files/xuwukenopazon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4610/0392/files/xazokuzukawoboxiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61086590007.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7258/5888/files/5186287019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2585/6669/files/fodowarutobadu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3989/1357/files/weteposedekiku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/9510/0311/files/medical_certificate_form_42.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3428/0099/files/lubigemajubab.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_off00005a19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A19 4900 bytes
SHA-256: 6aab53adb6483c85822d7ee85bc34f0b7057e427080773807fa8d52653e6f3d6
font_01_sfnt_off00006ab4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AB4 10692 bytes
SHA-256: d3a5134584ea6e5ec91c23391d0f693d02b315fc33a308bcfc3226a06d73e6df

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