Malicious PDF — malware analysis report

Static analysis result for SHA-256 79d718312d1841a3…

MALICIOUS

PDF

40.3 KB Created: 2020-08-11 12:44:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 28e09bcb1df8ba7dd78b1a2c463e4f7b SHA-1: bd6223f05617325da02a16cc1a5baee12c27e80e SHA-256: 79d718312d1841a30b203c2e254d16dd78ef662120543eb4826af0d16f75f70a
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service. The document body, though heavily obfuscated, contains a URL that leads to a known malicious redirector. This suggests the document is designed to trick users into visiting malicious websites, likely 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/wb?keyword=sumas%20y%20restas%20con%20llevadas%20segundo%20primaria%20pdf In PDF document text
    • http://files.spraysafeplaysafe.org/uploads/1/3/0/7/130776594/kigirige.pdfIn PDF document text
    • http://files.lifewisegifts.com/uploads/1/3/0/8/130874128/6ab8d3.pdfIn PDF document text
    • http://files.jessicasnyderedits.com/uploads/1/3/2/7/132740892/8852695.pdfIn PDF document text
    • http://files.onecityhistoricalfoundation.org/uploads/1/3/2/3/132303320/zovavatiguj.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/1/0438/1255/2864/files/hp_pavilion_g_series_laptop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4160/3239/files/egyptian_architecture_history.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9562/1781/files/riwodajadowugunufij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8577/5519/files/64670000603.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4375/6954/files/les_automate_programmable_industriel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3470/6083/files/josoluzozibo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5969/9109/files/lonatasafobikanefusepa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8102/3140/files/wovasefigajojomivowiluniz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9162/4096/files/3185593539.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5453/0709/files/63047232346.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7304/3622/files/acta_constitutiva_asociacion_civil_formato.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5269/3664/files/simon_xt_installation_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8292/3676/files/discord_link_formatting.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5711/8374/files/muwukitateno.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_off00005ce9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CE9 5740 bytes
SHA-256: 236300367da8d6469263d17aa924292066a3cade74ad09e96358051a44ae7e57
font_01_sfnt_off00007067.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7067 10320 bytes
SHA-256: c091e84a12c98926b7acfec812f4633399a83a513ef1af9e1b745df71489bb4f

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