Malicious PDF — malware analysis report

Static analysis result for SHA-256 8283b625f348854e…

MALICIOUS

PDF

34.3 KB Created: 2020-09-10 21:53:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 00f3a5254281dca35a141cd3d2c0f14b SHA-1: 96ee4bebd970f77e08012e2576a3d68eec498859 SHA-256: 8283b625f348854ea2d2f6c2d7e0316bde5cecd49a679f9b3d34b0e6337ed6f5
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links and a lure in the document body suggesting it's a template for an 'Nsw health immunisation register'. Heuristics indicate these links point to malicious redirectors and a link farm, designed to lead users to potentially harmful content. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it's used for phishing or malware distribution.

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/wix?keyword=nsw+health+immunisation+register+template In PDF document text
    • http://files.ljohnsonlab.com/uploads/1/3/1/1/131163533/foludog-ligojukexif-voxosup-valufasaxa.pdfIn PDF document text
    • http://files.mungerink.com/uploads/1/3/2/7/132710654/betegasewi_mopifijog_wajajufe_goxet.pdfIn PDF document text
    • http://files.wolfetonesboston.com/uploads/1/3/0/8/130874122/goreviz.pdfIn PDF document text
    • http://lepeporo.urbanedenbeauty.co.uk/uploads/1/3/1/4/131413418/5711969.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/1/0433/3142/0319/files/alimentos_transgenicos_en_ingles.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9703/8756/files/simplicity_sewing_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/zowutuxiziruro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6671/0433/files/29373126454.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2023/8503/files/86525913390.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2340/8036/files/armitron_wr330_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4460/9943/files/38436465489.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_a4c5e787f2bd47cd926fb14535470c8c.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/3b47cb_76d35dbc1104464b80a45af601148c80.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_off0000493f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x493F 5292 bytes
SHA-256: eab770db3b6efba75a4cb6856652c1803b40bc302302b63a3606b3b429e1dfe3
font_01_sfnt_off00005b2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B2A 9676 bytes
SHA-256: 5f22d4609ffcb43f16331577ffa5770322d7dda096f72d47c86f7c057aba5655

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