Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fc38cc9bcab9d40…

MALICIOUS

PDF

98.4 KB Created: 2020-08-09 23:48:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 23debbf3632c77e89e599530e2cc6c00 SHA-1: 82c40f9bd823916c37276ac354791de741827923 SHA-256: 6fc38cc9bcab9d40833791c740410664eaba6f624430c3505afed3f0f921e793
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links and SEO link farming, pointing to a high-risk document. The primary malicious URL identified is https://ttraff.ru/pify?keyword=cbc+test+normal+range+pdf, which is linked from the document body and flagged by heuristics. The document's structure and embedded content suggest it's designed to exploit users by directing them to potentially harmful sites.

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.ru/pify?keyword=cbc+test+normal+range+pdf In PDF document text
    • http://files.jadmag.org/uploads/1/3/1/8/131856602/01b62ec05c.pdfIn PDF document text
    • http://files.bigsisterschicago.org/uploads/1/3/2/7/132740978/zojuduv_dalebivuxig_gumekexak_tipanunisevit.pdfIn PDF document text
    • http://files.coaching-planet.com/uploads/1/3/2/8/132814276/lebumujajofo-dewitupekaja-mozofaw.pdfIn PDF document text
    • http://files.jarryjornopublishing.com/uploads/1/3/1/4/131454352/pimoful.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/1/0438/5413/5456/files/convert._pages_to.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3862/9288/files/sogujof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4991/7347/files/94474486686.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6482/6773/files/desugewojasobifujezuwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5788/0996/files/basic_language_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/98570598377.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0425/4615/files/jonado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9812/8036/files/falewivigukenafikegara.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9755/4084/files/vapobi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0631/0046/files/levojutini.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_off0001451c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1451C 5520 bytes
SHA-256: edbded0539caaa440ff755d172ce09ea130fc2b636bdb5471ae0453322f1c9d8
font_01_sfnt_off000157be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x157BE 10828 bytes
SHA-256: 84aad0f05d18c50107fc610f32ca22529512674286da9eea649fceb082fdac5f

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