Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bb3732e04b39f9e…

MALICIOUS

PDF

44.1 KB Created: 2020-08-18 14:31:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a489375c0f7440c778fd1b8849a8b331 SHA-1: 5198a288a5f4bb0b8889474710f2b0c4423488bd SHA-256: 5bb3732e04b39f9ef5bb9d22006114da59c875d11f020fdb1320b0c0d8097754
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs, with a primary redirector pointing to a known malicious domain. The document body, though partially corrupted, includes text related to 'Html code for registration form in mvc' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of a large number of external PDF links, many pointing to potentially malicious or unknown domains, further supports the malicious intent.

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.com/pify?keyword=html+code+for+registration+form+in+mvc In PDF document text
    • http://sarexitu.lisaguice.net/uploads/1/3/1/4/131454762/nurulefekinisamogeje.pdfIn PDF document text
    • http://moporof.straleystudios.com/uploads/1/3/0/9/130969723/3749632.pdfIn PDF document text
    • http://files.linksstainedglass.com/uploads/1/3/1/3/131379496/matasawuvanadaret.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/1/0441/2496/2968/files/caballo_de_troya_5_cesarea_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3821/0205/files/bidart_campos_manual_de_derecho_constitucional.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5543/0309/files/letter_from_birmingham_jail_critical_thinking_questions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9480/2583/files/ganutunigalobudanavo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2218/6653/files/44332249243.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4949/2384/files/24672438168.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2411/1000/files/generador_electrico_eolico_casero.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1539/7788/files/zupivugoxefuromuxiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3466/4347/files/hssc_exam_date_sheet_2019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/9554/4228/files/bemetojuzudubite.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 4

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_off00006254.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6254 5364 bytes
SHA-256: 01b0f21a3048ae947b8493a621f91993342156fbb640df9931fea187127c037f
font_01_sfnt_off00007479.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7479 15052 bytes
SHA-256: 9a3090b632e1cc113fe9412344edfb33cb21e88c0500aeaedf6fd3f2a36c465b

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