Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb5d0200aa41d229…

MALICIOUS

PDF

38.8 KB Created: 2020-08-23 06:31:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 07499c2490e440c0cbaba55031679243 SHA-1: 6cf5f670b8758a3b01f07f836b1fb42ce13dedfd SHA-256: bb5d0200aa41d229b73917e5957c7239e07676fe921407e7e72206ee5f453c53
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged as malicious by a machine learning classifier and contains a significant number of embedded links, many pointing to a redirector service. The primary malicious URL identified is https://ttraff.ru/pify?keyword=iupac+harmonized+guidelines+for+internal+quality+control, which is likely used to direct users to a malicious site. The presence of a link farm suggests an attempt to manipulate search engine results or distribute malware through numerous seemingly benign-looking links.

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=iupac+harmonized+guidelines+for+internal+quality+control In PDF document text
    • http://files.sustainabilityconference.us/uploads/1/3/0/7/130739916/roxaxotazazipo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0445/3256/4132/files/libros_de_abandono_infantil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2307/9323/files/bipepitiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/waxigulazatep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1692/0996/files/65519081895.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6067/4198/files/apple_pages_template_flow_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0930/9854/files/6693416911.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6012/5080/files/zaguzumirezexavipe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6066/6274/files/20021258951.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5232/5272/files/7586477949.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/4237/7623/files/34455427402.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3853/0965/files/23615319826.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4485/5195/files/descargar_biblia_de_estudio_esquematizada_reina_valera_1960.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 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004a29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A29 5664 bytes
SHA-256: ef477d9c54503ccd7688d0f8cc7dda8cd0a9365e079c001a161950b7d787fbbe
font_01_sfnt_off00005d48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D48 10236 bytes
SHA-256: c971af749e1208d54d35a10177c8beba9bc13b28144918f6dd5ab9d3a778f8ea
font_02_sfnt_off00008000.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8000 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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