Malicious PDF — malware analysis report

Static analysis result for SHA-256 873bb5a90cad44c3…

MALICIOUS

PDF

40.4 KB Created: 2020-07-31 22:09:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: efeff20229660acb135474eb9b84832b SHA-1: 8412a916bb97b9d8d2665d9bc99d7372e63900c8 SHA-256: 873bb5a90cad44c396f95b99cc1676bf23e724b9c76d26e98469bd47507db529
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 identified as malicious. The document body, though heavily obfuscated, contains a URL that is also present in the malicious redirector. This suggests the document is designed to funnel users to malicious sites under the guise of providing a Minecraft skin editor.

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=minecraft+skin+editor+skindex In PDF document text
    • http://files.rollingglenranchmt.com/uploads/1/3/1/4/131482941/1d8e2fcf61.pdfIn PDF document text
    • http://files.reichertz.ca/uploads/1/3/1/4/131407737/mamirupizovig.pdfIn PDF document text
    • http://files.amymarinohomes.com/uploads/1/3/0/8/130814596/617ce4f7b7e09e5.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/1/0431/2514/5754/files/bikulexonerotizunamotapap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/35535883354.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/kamakiwukikazedomobere.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7211/7141/files/lulafedodim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3551/6318/files/lajofezodevopivure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6412/1752/files/ronenofeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8545/3730/files/93210636696.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8451/3444/files/fasadatesodozofadu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3467/3305/files/44021102976.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9240/1573/files/35284422329.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4525/6344/files/19690787429.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6759/6184/files/buwebezaxu.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 3

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_off00006048.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6048 5120 bytes
SHA-256: c085af5f9795db9e17fd501fe26b7f4d0031cf4fd55d30cc5d3bfabe512faec9
font_01_sfnt_off000071d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71D6 10220 bytes
SHA-256: 29966aff4e5ed918cbd7b76aa1e56b3933ef9d1eaf13fcf5536d1e8e82f2a323

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