Malicious PDF — malware analysis report

Static analysis result for SHA-256 80829fb17e3872cf…

MALICIOUS

PDF

39.0 KB Created: 2020-08-21 05:26:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 35d5c45bc15f10868c70c99021114514 SHA-1: fdbbb1d79f0bb1673b5832acec4c05406717f464 SHA-256: 80829fb17e3872cf7d9e727156cd6affb4ee433527589d0f3e586938ac8a12e1
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though partially corrupted, includes the same redirector URL, suggesting a phishing or scam attempt. The ML classifier strongly supports the malicious verdict.

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.com/pify?keyword=clock+faces+worksheet+year+3 In PDF document text
    • http://files.mexitem.com/uploads/1/3/2/7/132710678/6740723.pdfIn PDF document text
    • http://files.certcpr.com/uploads/1/3/0/7/130739684/zekituwubezitatu.pdfIn PDF document text
    • http://files.artofceremony.co.uk/uploads/1/3/0/7/130738806/175cacbb1fee7e2.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/1/0434/2621/8136/files/76776280879.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7952/2722/files/model_cerere_concediu_odihna_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5681/6540/files/faxad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4517/5971/files/merge_sort_recursion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2977/3981/files/jajafoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1800/2340/files/d_d_bestiary_5e.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5123/7032/files/29593103308.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9639/9265/files/knee_and_ankle_strengthening_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9970/8821/files/8011238126.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1555/2672/files/53933435079.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_off000059b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59B3 5296 bytes
SHA-256: f677a106ebc45e748fc622fce219f0120b5028d6a58857d7f7a176f80c947a0f
font_01_sfnt_off00006bc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BC1 10412 bytes
SHA-256: dfd279121a2e0cf34360fc9bcd026bad8253df0b66d684c1b338f5003589e327

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