Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b6f62199b258131…

MALICIOUS

PDF

50.3 KB Created: 2020-07-24 19:51:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2bd18ddb74816ec3cf1a37211839af45 SHA-1: 7f881aead4a21049aef61d5591e7a888514a4f1a SHA-256: 4b6f62199b2581319d98df3e084b24b41563e1c88164c7a0d2aa47aaddaf7d1b
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF file contains multiple heuristics indicating malicious intent, specifically linking to a known malicious redirector and acting as a link farm. The document body, though heavily obfuscated, contains text related to 'racing games' and a 'download' lure, suggesting a social engineering tactic. The primary malicious IOC is the redirector URL, which likely leads to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=best+racing+games+for+android+2016 In PDF document text
    • http://files.greenwillonline.com/uploads/1/3/0/7/130775655/7246023.pdfIn PDF document text
    • http://files.freshvision.org/uploads/1/3/0/8/130813997/kujedanizokulo.pdfIn PDF document text
    • http://files.whatisib.com/uploads/1/3/1/3/131379700/3292138.pdfIn PDF document text
    • http://files.pcowley.com/uploads/1/3/2/7/132712096/zuwavumanutuget-vurezupole-dositadire.pdfIn PDF document text
    • http://files.snowspinbaits.com/uploads/1/3/2/6/132681308/refabow-xapivazezojeke-koxupotivani-duzewakoli.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/1/0434/1969/7310/files/dokapipiwuvix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0731/7912/files/915778814.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1060/3677/files/43061133497.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/4207389826.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/24810932871.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8201/4108/files/xusopidovido.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5792/9621/files/sufupaned.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5018/0503/files/zuwolabifubuwozojotugavo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pufabupenidobuxix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5538/0630/files/36581437271.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4196/4710/files/74646912045.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0159/3505/files/85948666280.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9740/0223/files/39793383442.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_off00008516.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8516 5628 bytes
SHA-256: 94b6b695fc24145f55ecf6343bda76279b14526c8b9d93a518e9c284a71566fa
font_01_sfnt_off00009824.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9824 10560 bytes
SHA-256: 2145be0cfbeff490fe85ea7943e8b73094108f0cb7195eb2f43dd614bc1e211d

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