Malicious PDF — malware analysis report

Static analysis result for SHA-256 1158350547dc4f2e…

MALICIOUS

PDF

341.3 KB Created: 2020-08-06 01:57:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e09ba1cebb20c63d9a41c076c6c1b9cb SHA-1: 77021df1c412d8100ec05cf9beb775b416f17110 SHA-256: 1158350547dc4f2ec00ab5601f2410463e3a97c591d34bf27e261c7d70a52605
134 Risk Score

Malware Insights

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

The PDF contains heuristics indicating it is a malicious redirector, specifically designed to lure users with an image and link promising a free download. The primary IOC is the redirector URL, which is known to lead to malicious infrastructure. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • 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=read+allegiant+online+pdf In PDF document text
    • http://files.ohwhataluckyfish.com/uploads/1/3/0/8/130874276/duvakumaba.pdfIn PDF document text
    • http://files.shreyanshjain.net/uploads/1/3/0/7/130739986/fb6d2f8301.pdfIn PDF document text
    • http://fegoruwat.wivert.co.uk/uploads/1/3/0/7/130776031/5010808.pdfIn PDF document text
    • http://files.dunnclowns.com/uploads/1/3/1/8/131856158/992e69.pdfIn PDF document text
    • http://files.gracemankato.com/uploads/1/3/1/4/131406558/votedip.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/1/0432/2403/9592/files/vogoxosoguxigululedubisug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9394/0629/files/alveolos_anatomia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9365/5716/files/82125902736.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3996/2774/files/20991950928.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4398/6340/files/marofurolopag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0659/0106/files/89818040807.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8606/7352/files/47270517244.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6769/4490/files/54601344178.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/28664871254.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1077/6473/files/gogasimatorasuzep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2270/5055/files/zezomovuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8155/5350/files/jobidukikuwepabaxozafofas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/0826/6137/files/doguvetaxivefo.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 7

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_off000511d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x511D8 4944 bytes
SHA-256: c42e4c1ffe71e4dcdd24a3c4ee54f82da986ae5852a23814328e7268bba6fb19
font_01_sfnt_off000522cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x522CD 10496 bytes
SHA-256: 7b92a49606ba8211dc09dd058a35ee5803bfd26d0805b47419c5e4c0910320fd

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