Malicious PDF — malware analysis report

Static analysis result for SHA-256 24ed83e33d231fe1…

MALICIOUS

PDF

41.3 KB Created: 2020-08-03 15:54:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e745b890421196d98d71c8f37ac0c7a5 SHA-1: daebe29c47b1ad4a2a3c05532d1e36ea482d0504 SHA-256: 24ed83e33d231fe1000ea649cc244d38f0639c89797fdcaa302be5a091157349
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document was flagged by multiple critical heuristics for containing malicious redirector links and a large farm of external PDF links. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains a URL that points to a known malicious redirector, likely intended to lead the user to a phishing or malware-hosting site. The presence of numerous links, including those to potentially untrusted domains, supports the conclusion that this PDF is designed for malicious redirection.

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=biology+lab+experiments+pdf In PDF document text
    • http://files.moonphasegoddessshop.com/uploads/1/3/2/6/132682327/tojimuwis.pdfIn PDF document text
    • http://zoxav.jracdm.com/uploads/1/3/1/4/131407535/2756382.pdfIn PDF document text
    • http://files.buffalobillboycott.com/uploads/1/3/2/6/132695200/zufikowuxexo-pilikanalewir.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/1/0430/7006/2754/files/66166766468.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2398/3001/files/mamelitiwimozavusitiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5479/1832/files/semilegagidomewaru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0159/3507/files/58231511036.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/lokisexiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1646/8133/files/bosukapopasewiwavafoseken.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0763/1779/files/xowapeliwef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0958/6853/files/tavoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4324/9563/files/72600202269.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9988/9569/files/xofipegukabuvo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5198/3772/files/48318769238.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 1

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_off000062cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62CF 5720 bytes
SHA-256: cf56b4704a6fc8978664db792590238aafc13ffdec01d75a7b90f3bd4d5ec546
font_01_sfnt_off0000763f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x763F 10044 bytes
SHA-256: 9f41b369cc8621ba3bcc5b8a55c0da29c0e7f1e73a3971befebff9f847ac8005

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