Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c3df090e204596c…

MALICIOUS

PDF

48.5 KB Created: 2020-08-19 22:25:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 99921d0fcb680668f7f01b9e2527c8d8 SHA-1: da562e0fee0a13e69aa3d8a47578c894c94eaaf1 SHA-256: 0c3df090e204596c85f891a1a1da5115f18741713716391ebc5849b440fe91d4
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a mass of external links, many of which point to a redirector service known for malicious activity. The document body, though heavily obfuscated, contains a URL that leads to this redirector, suggesting a phishing or scam attempt to trick users into downloading further malicious content. The ML classifier strongly supports the malicious nature of this PDF.

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=dispositivos+de+almacenamiento+de+informacion+magneticos In PDF document text
    • http://files.calvarybaptistemporia.org/uploads/1/3/0/7/130738971/rabesizep.pdfIn PDF document text
    • http://files.mauiskydiving.info/uploads/1/3/2/6/132683087/8163219.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/1/0436/8692/0347/files/91956221233.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1278/4277/files/gitogovadib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6990/5825/files/sawamifokezegisunasovil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7816/4387/files/tapivarususijom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6135/4404/files/92538370383.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4798/4026/files/santa_biblia_descargar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2830/6341/files/71702948250.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/24221046066.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7304/4647/files/business_credit_report_definition.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 5

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_off00007c28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C28 5532 bytes
SHA-256: 2423cff6cf95b7a4c67fd6ce939db3e72943136252328c33b6804297a23f1ec3
font_01_sfnt_off00008eee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EEE 10988 bytes
SHA-256: 7a502c68f5f06c298659323446969d55acf1d8177a27a669024d34f981731191

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