Malicious PDF — malware analysis report

Static analysis result for SHA-256 84000068221df2ef…

MALICIOUS

PDF

39.9 KB Created: 2020-08-12 05:02:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0ffad5e30dea75c6a1545c18c6376914 SHA-1: 6e468fa694c7c81cb836baa805332d541352917c SHA-256: 84000068221df2ef716a10cb6cfd3e52e8d626dd2247fe5dd26da99ebda97257
194 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by an ML classifier and contains multiple heuristics indicating malicious redirector links. The document body, though partially corrupted, contains text suggesting a lure for a "rulebook pdf download" which points to a redirector URL. This URL is likely used to funnel victims to a malicious site or to download further malware, aligning with a phishing or social engineering attack pattern.

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/wb?keyword=outbreak%20undead%20core%20rulebook%20pdf%20download In PDF document text
    • http://files.capitolqma.com/uploads/1/3/1/3/131379113/salenewe_mezema_kugofamosuxo_pipinuduvoter.pdfIn PDF document text
    • http://files.essenceofbeautydublin.com/uploads/1/3/1/6/131637057/9362341.pdfIn PDF document text
    • http://files.quiltwithleslie.com/uploads/1/3/1/3/131398515/luzoguxijuzofa-gevatumuxe-goradenibex-zifasugupur.pdfIn PDF document text
    • http://files.statedshowroom.com/uploads/1/3/1/3/131398547/dedido.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/1/0430/0252/7897/files/multilayer_blown_film_extrusion_process.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6192/7318/files/6052128510.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5921/6533/files/5361032886.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0292/1123/files/41067486450.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/viborovikumowenaben.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9437/6599/files/19929355024.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8787/8549/files/aprender_a_tocar_guitarra_acustica_muy_completo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8651/9208/files/zalijuzubapokeguw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4579/5493/files/saxaxuramexezibosux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/8179/6503/files/siligadir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7763/9075/files/order_of_adjectives_worksheet_for_high_school.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4670/7104/files/sobireziduzax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4713/2068/files/43505342770.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005b4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B4D 5296 bytes
SHA-256: a56fc1f0f61013b1dbb1a7602e17ed5897e500f673712976f7f73a140e0ca8a0
font_01_sfnt_off00006d6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D6F 10948 bytes
SHA-256: 0b3e1df07c65db1f7da3d5d1eddb7022204ea97a30d3fca5d45085bc54c94136