Malicious PDF — malware analysis report

Static analysis result for SHA-256 830fbfe3efb08822…

MALICIOUS

PDF

41.4 KB Created: 2020-08-11 23:14:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6bd0bb67125500b6ad1311b8e9210616 SHA-1: 33dcf05f4165271f34dee3c6bb0271510fe19e8b SHA-256: 830fbfe3efb08822a91069a276bab12641c11f3437583aa63d0b7f7af75796c5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with a critical heuristic identifying a redirector link to 'https://ttraff.cc/wb?keyword=ejusdem%20generis%20rule%20pdf'. This suggests the document is designed to redirect users to malicious infrastructure, likely for phishing or malware delivery. The presence of numerous links, including to Shopify-hosted PDFs, indicates a potential SEO poisoning or link farm tactic to increase visibility and clicks.

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=ejusdem%20generis%20rule%20pdf In PDF document text
    • http://files.stevemager.com/uploads/1/3/0/9/130969402/1406598.pdfIn PDF document text
    • http://dujit.1corinthiens15.com/uploads/1/3/1/8/131856380/nobabosevo-dutitolalerek-gopesowam-wovusamewuf.pdfIn PDF document text
    • http://files.junyeo.com/uploads/1/3/1/3/131380627/tukelijupoperelek.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/1/0432/8449/6550/files/dizugufusufowabavavesuxar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/97625471818.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2778/4103/files/70475832722.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8191/5809/files/bluedio_t2_user_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0601/7186/files/advanced_engineering_mathematics_5th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1568/1701/files/81774021997.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1102/2756/files/12941508837.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5665/9621/files/balancing_chemical_reactions_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3900/6632/files/advanced_mathematics_an_incremental_development_solutions_manual_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6498/3703/files/kosejuxirozo.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 2

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_off0000630b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x630B 5184 bytes
SHA-256: 14aee8a3dbea80a5f9e05b1dfe9ae78d30a2f39bc659453a99671e1c3d71ee64
font_01_sfnt_off0000749c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x749C 10648 bytes
SHA-256: d12144c5375f5299a95987ea49402901399e07416db594193909995adeaf9a46

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