Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c669d0f6c01c8fa…

MALICIOUS

PDF

50.0 KB Created: 2020-08-21 17:25:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6c38e87521560af5ced1a20b095e37f4 SHA-1: ed36a1ecc37130ec6b24c7ecfec08e543f622802 SHA-256: 6c669d0f6c01c8faf8d0d37a3ef0b8a2121c5de797094bcd1bc7710e33a9ff50
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one to a known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=internet+of+things+ppt'. The document body, though heavily obfuscated, contains references to this URL and other PDF files hosted on various domains, suggesting a link farm or phishing campaign. The ML classifier strongly indicated maliciousness, and the presence of redirector links points to an attempt to lead the user to a malicious site.

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=internet+of+things+ppt In PDF document text
    • http://jezesamug.papoulisconstructions.com/uploads/1/3/0/7/130776257/4984453.pdfIn PDF document text
    • http://files.ancientwavestudios.com/uploads/1/3/0/7/130775837/kodivamilukozad_wesaberebujozu.pdfIn PDF document text
    • http://badolad.alkhomassia.com/uploads/1/3/1/4/131453850/5b1903870d90fe.pdfIn PDF document text
    • http://files.davaocityproperties.com/uploads/1/3/1/4/131409309/jilubigat.pdfIn PDF document text
    • http://papatosar.mckinleyrich.com/uploads/1/3/0/9/130969596/8741703.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/1/0433/6300/8661/files/musaletivasekivojivu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3864/5144/files/piwodeze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5491/5993/files/xigutipafobebenelut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9961/1553/files/dudajujotisusu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9839/9139/files/pajez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6447/5299/files/6820098308.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2820/0096/files/formulario_boleto_estudiantil_gratuito_misiones.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3016/6176/files/zorexavojavitajoxep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0582/1599/files/31429423883.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2670/8637/files/babipax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6396/7906/files/63949175253.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_off00007acf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7ACF 4860 bytes
SHA-256: c72712f05cf874ed18d4f8d6ad0c9e5ea997fa831ef0f9e65ca74acd740ea759
font_01_sfnt_off00008b5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B5E 15252 bytes
SHA-256: dee1165cb974b7fd2f1f940e19f03a04c7587814cedda10e1653962f20592eac

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