Malicious PDF — malware analysis report

Static analysis result for SHA-256 db920373d81c4d2f…

MALICIOUS

PDF

51.1 KB Created: 2020-07-30 09:21:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 15b39a6db9db65233607e5174936b21a SHA-1: 72a845095be6bda3b83c83979173137cfcaabd90 SHA-256: db920373d81c4d2fce871c205032a6bd842482dba1dff91a8a1d7ec70b54daff
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, many of which are identified as part of a link farm and redirector infrastructure. The primary redirector URL, 'https://ttraff.cc/pify?keyword=adaptive+design+methods+in+clinical+trials+pdf', is explicitly flagged as malicious. This suggests the document's purpose is to direct users to potentially harmful sites, likely for phishing or to download further malicious content.

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/pify?keyword=adaptive+design+methods+in+clinical+trials+pdf In PDF document text
    • http://files.kevinconlonart.com/uploads/1/3/1/3/131379904/baxinip-wafinenetogaze-bufadexunotuwik-mifiw.pdfIn PDF document text
    • http://files.nicolechinuntdet.com/uploads/1/3/0/7/130775825/xosekeludo.pdfIn PDF document text
    • http://files.thewallssager.com/uploads/1/3/0/7/130775846/zofudaxeluzun-vogake.pdfIn PDF document text
    • http://files.cherrycitycloggers.com/uploads/1/3/0/7/130775373/ruxetabavob.pdfIn PDF document text
    • http://files.comalcountybar.com/uploads/1/3/1/4/131453022/nidelisu-xanin-bidoxalib.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/1/0437/3594/1274/files/70645466262.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2681/5903/files/72536839065.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4509/3530/files/86779060257.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lalosukiwafigoledexefes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1415/2607/files/xokilogoledijazurum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5719/3895/files/55869813648.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2385/9873/files/43148063432.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3123/8568/files/laxobipuleseweduwosik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7382/2102/files/lawiladekodokijituzegojo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4916/5734/files/sotusigogovabolipasip.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_off00008977.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8977 5408 bytes
SHA-256: e0af703588a1d47bcdf523b02a9248abdfe1775fcce9caad0060846da5f724a1
font_01_sfnt_off00009bb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BB1 10352 bytes
SHA-256: 9befd5e85fccd3b1129c50cfbd8f54fb4b2d3199366a2cd5d32697b695389349

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