Malicious PDF — malware analysis report

Static analysis result for SHA-256 5201da504b9d2df5…

MALICIOUS

PDF

39.0 KB Created: 2020-08-15 06:46:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 298a43b1052d484899dd854af4bb09bb SHA-1: 7555291a8ca759c4d26d35c48c24581b76b76fd2 SHA-256: 5201da504b9d2df5eb9632c60d42fc661558394ea9c85e54b8374125368d4291
194 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be a lure for a game download, which redirects to a malicious domain. This suggests the primary purpose is to redirect users to malicious content, likely for further exploitation or phishing. The ML classifier also strongly flagged this PDF as malicious.

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=toy+blast+game++apkpure In PDF document text
    • http://bipogowa.materchristireligioused.com/uploads/1/3/0/8/130874197/7075883.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/1/0431/5312/9640/files/rufonaku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4273/4229/files/tewijivelafisapusi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6385/2708/files/gabavijidetenot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7810/6779/files/baofeng_uv_5r_programming_software.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2041/1289/files/john_deere_sabre_1438_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3685/9813/files/4402511826.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/memew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4798/4026/files/kidopajobewajapemil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3269/1363/files/87697027852.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9826/0124/files/91019580915.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1230/9670/files/nitejewuwenenumilokoseto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0663/9779/files/publish_webpage_in_github.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1918/7862/files/firefox_auto_refresher.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0726/1341/files/pefemitopanus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4230/8250/files/1538629578.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 1

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_off0000578f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x578F 5396 bytes
SHA-256: 4a1e86a7e901a21a32b15bea89f0e48204ea9e1e8998f22b351b49067f4972b4
font_01_sfnt_off000069df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69DF 11020 bytes
SHA-256: 0676aba421aea0f56e103a7d1c3edca129b722e4f35bb62e6fd6151f5aecf2b2

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