Malicious PDF — malware analysis report

Static analysis result for SHA-256 8121d93a15460021…

MALICIOUS

PDF

48.0 KB Created: 2020-08-14 21:09:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 923a15121b539bbe40925c6a8a3f33be SHA-1: f26d0649116dee6badbd8d740baa6cb15db7efcf SHA-256: 8121d93a15460021d856436f9fa28464164a957e1110303ec18d585b64feab62
202 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, suggesting a phishing or scam attempt. The embedded URL and the document body both point to a lure for an 'interactive PDF reader iOS', which redirects to a malicious site. The ML classifier strongly supports the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.com/wb?keyword=interactive%20pdf%20reader%20ios In PDF document text
    • http://files.jimpendergrass.com/uploads/1/3/2/8/132815961/xabixejeje-nenowapiwage-jisematonalon.pdfIn PDF document text
    • http://files.edenplacefarms.org/uploads/1/3/1/3/131398250/36c4f389e18c0.pdfIn PDF document text
    • http://fetatet.gentlehomeservices.com/uploads/1/3/2/3/132302815/efdf1da2d0e46.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/1/0430/7235/6513/files/amphitheatre_design_standards.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2917/6232/files/catalogo_de_tornillos_para_madera.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1900/8160/files/xemakakaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3050/2806/files/18793256925.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6704/0163/files/36550680766.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0510/0707/files/movitone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9969/0910/files/creative_writing_assignments_for_middle_school.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5196/5855/files/enlaces_quimicos_resumen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5417/8216/files/10773615617.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8806/8254/files/vemigegofoxosudexes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9322/1783/files/22316947864.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6301/7629/files/45923118791.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_off00007c84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C84 5116 bytes
SHA-256: 2785b0577a8c03cc2add4e3f7e5e9fdc4f5efd89aba312dcaf4f1a9e5d002e7e
font_01_sfnt_off00008df4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DF4 11268 bytes
SHA-256: b8bb9e0d8f957afcb5c354f0e99958f59c0cb0a96375d346f8f050b46bb4d565

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