Malicious PDF — malware analysis report

Static analysis result for SHA-256 69c8d3309d03f752…

MALICIOUS

PDF

42.4 KB Created: 2020-08-10 02:29:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fe24c5f8fc311e68d7e39e19298d4985 SHA-1: 04f3b2f7bbd9fdf3c69c907bbcaba08d09a4645a SHA-256: 69c8d3309d03f752a354d7d3dec50d8f7172af473f781d8080b7edf8ea220106
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 indicating it redirects to known malicious infrastructure. The document body, though heavily obfuscated, contains a URL that matches the redirector. This suggests the PDF is designed to lead users to malicious sites, likely for phishing or to download further malware.

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=bncc+pdf+2020+ensino+fundamental In PDF document text
    • http://zirevi.cbwilsondesign.com/uploads/1/3/1/4/131406893/xivonuj_budamewuxaj_luninune.pdfIn PDF document text
    • http://files.paulharryallen.com/uploads/1/3/1/4/131452778/67e534c1.pdfIn PDF document text
    • http://files.teachpopulationhealth.org/uploads/1/3/1/8/131858661/kekigadopu-zuvimukolawop-zujok.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/1/0434/4433/8838/files/bruckner_stenter_machine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pafinekumukomotutawewokab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9925/1093/files/bradbury_short_stories.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7754/9728/files/jetomizuribolopetuxopu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4324/9563/files/59902779341.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6482/8838/files/lupebogizeletotafidu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8450/4474/files/49572552493.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6316/4580/files/computer_hardware_and_software_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0691/0887/files/84755846885.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0299/4586/files/10878132306.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 2

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_off00006725.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6725 5528 bytes
SHA-256: 9518355bad2770ca036005208e0159b654373f0956762400132f1931c10db79c
font_01_sfnt_off000079eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79EB 10300 bytes
SHA-256: 6c31b27851e2fd921d2032d9c14f4e775df984a4debc2751e2656c0cd339f17b

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