Malicious PDF — malware analysis report

Static analysis result for SHA-256 88a9f1f2c9b6f94b…

MALICIOUS

PDF

33.7 KB Created: 2020-09-20 01:00:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0c03fc4ad5822a6950cfb6ac4d8cb203 SHA-1: 6a81621797bb64ba9f353af8f07c5c138d2905bf SHA-256: 88a9f1f2c9b6f94b535f56e2dad42e0fc325eaa1efa903a0a03449d1cb86b300
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The document body, though obfuscated, includes a URL that matches the redirector, suggesting a phishing or scam attempt. The presence of numerous PDF links, many pointing to SEO-optimized URLs, indicates a link farm designed to distribute malicious content. No scripts were extracted, but the PDF structure itself facilitates the 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.club/wix?keyword=guess+the+movie+answers+level+27 In PDF document text
    • http://xuralo.38plus2productions.com/uploads/1/3/1/3/131398177/nejuwisugobad.pdfIn PDF document text
    • http://tegupeg.gystcstem.org/uploads/1/3/1/4/131406344/doxepagenupide-mivesisesidino-fikosidomi-gawerebara.pdfIn PDF document text
    • http://files.veggieandlovingit.com/uploads/1/3/1/3/131384281/6986574.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/1/0428/9835/8432/files/nubizasijimowedemo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4127/5547/files/analytics_meaning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9091/2159/files/35876370320.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/9042253345.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4705/7568/files/acc_aha_atrial_fibrillation_guidelines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2010/7428/files/joxotinisideto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3045/2123/files/rilitaverokuwasisoki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6165/8279/files/atonement_full_movie_free_300mb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3867/6894/files/sulerulusozofepolafu.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_off00004712.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4712 5320 bytes
SHA-256: 4a43ef2285f6d37f2161610f75c1e9a15235d4aaf3c6f7c4d7f113a4bfdae2f8
font_01_sfnt_off00005916.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5916 9768 bytes
SHA-256: 5287364e213b504e57df353706b7ac2b017e1ad4c56eb36f42de2b17d5e6775a

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