Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bb4f8fd4d2a2a6f…

MALICIOUS

PDF

41.2 KB Created: 2020-08-20 00:03:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 10eb8c164bf21bfc38d0da33e5fe4866 SHA-1: 5ff25fc29e601728cb09f7be72c648b0baea15b3 SHA-256: 5bb4f8fd4d2a2a6f5b2d780f1ae5fada0e7d2d71a8c8a6c50c19cb7e360fec51
162 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The document body, though heavily obfuscated, contains text suggesting a lure related to 'shooting games for pc' and includes the malicious redirector URL. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of 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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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/pify?keyword=shooting+games++for+pc In PDF document text
    • http://files.minnesotaenergyathletics.com/uploads/1/3/0/9/130969811/e0cb116.pdfIn PDF document text
    • http://files.pulpanddeckle.com/uploads/1/3/2/6/132680922/659f672e0.pdfIn PDF document text
    • http://files.karenjshaw.com/uploads/1/3/0/7/130776047/wijugunivuvuxe-retanizulaga.pdfIn PDF document text
    • http://files.ccalliance.com/uploads/1/3/0/7/130739837/gidof.pdfIn PDF document text
    • http://files.ikaruscoffee.co.nz/uploads/1/3/0/8/130813364/6313670.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/1/0434/2605/4306/files/92861396516.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4253/7629/files/bofujinetaralepijina.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9242/5384/files/jazirelawazamiwurij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4965/5203/files/77190783723.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1878/7736/files/topexur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6694/9786/files/3639103538.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6393/4105/files/75028648882.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7743/4525/files/45288066837.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_off00006263.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6263 5500 bytes
SHA-256: 801e1670140e4a39d0f8587116664682c049b867ba81f8807f2df8fead18fe75
font_01_sfnt_off000074e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74E4 10172 bytes
SHA-256: 629d81ff2b9cc8903bdeb4a2d5ec2d56dd648bdaf92158c4d1612bdbb4f574bf

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