Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d0d0d9da2445214…

MALICIOUS

PDF

44.3 KB Created: 2020-08-14 04:28:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: eb1922f550b1f02259fe5c8dae87e5a9 SHA-1: aa2d61a94587b160a354c549c6f94e869902afd0 SHA-256: 9d0d0d9da24452141e9490cf37d187c1a1063bccc429a64854cdc8aaa9da5c77
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though partially corrupted, contains text related to 'uu kuhp terbaru pdf' and a URL that matches the malicious redirector. The presence of a link farm heuristic further supports the malicious intent of directing users to external, potentially harmful, sites. The ML classifier strongly flagged this PDF as malicious.

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.cc/wb?keyword=uu%20kuhp%20terbaru%20pdf In PDF document text
    • http://files.paulhorsman-author.com/uploads/1/3/0/8/130814065/5532162.pdfIn PDF document text
    • http://files.threepenny-theatricals.org/uploads/1/3/1/3/131383323/b522c.pdfIn PDF document text
    • http://files.hederafibers.com/uploads/1/3/1/8/131872273/f39cec726998.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/1/0429/4321/7830/files/anamnesis_audiologica_infantil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8140/9436/files/romodon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6191/9390/files/gijapukibevasewojodevo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6713/6413/files/analytical_thinking_techniques.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1382/4927/files/2000_ford_taurus_owner_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/4274895189.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gaxedisurerikemamezawapux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4937/7174/files/is_11587.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8350/5570/files/morawixidames.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xokuwunojuvilil.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_off000070a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70A2 5116 bytes
SHA-256: 9388d08c47f0d2a4e18759a70efe8bd9339639bfc0f738cdce93640d058b95e5
font_01_sfnt_off000081fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81FB 10092 bytes
SHA-256: 632b9639686d0b002c891dc3426b457c5abb96005a4304fc9d670745d7d3b26e

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