Malicious PDF — malware analysis report

Static analysis result for SHA-256 489aedfd4e817b2b…

MALICIOUS

PDF

40.4 KB Created: 2020-08-16 00:02:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 13803f848af101c8cf9898ebe8ac51ab SHA-1: b416e291d1c8079d41cf9480068ff1a5b504f2fa SHA-256: 489aedfd4e817b2b80950919e1940f75e82cc66bac87091386c65ac59aff297d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/wb?keyword=der%20schimmelreiter%20analyse%20pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains the primary malicious URL, suggesting the intent is to lure the user to this external site.

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/wb?keyword=der%20schimmelreiter%20analyse%20pdf In PDF document text
    • http://wizedijal.coloradosmallweddings.com/uploads/1/3/1/4/131483627/e1beef29a66.pdfIn PDF document text
    • http://files.richandsandy.org/uploads/1/3/0/9/130969169/97fde4f3e.pdfIn PDF document text
    • http://files.officesupercharger.com/uploads/1/3/2/3/132303170/5901f83924c7fb.pdfIn PDF document text
    • http://files.trainwithpayne.net/uploads/1/3/1/0/131069886/bde3b39b.pdfIn PDF document text
    • http://files.stewartislandnews.com/uploads/1/3/1/3/131398378/31b951153.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/1/0427/8904/4383/files/83001691896.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9811/2167/files/20857060559.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1630/6344/files/venerotumedunaludotu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3437/7372/files/breckenridge_snow_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4575/6821/files/tolixonolekufe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7877/9029/files/rebekuxusob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7813/2636/files/60864498913.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9200/9379/files/72181128491.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/67331216746.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8223/6583/files/78984640167.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 7

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_off00005d93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D93 5496 bytes
SHA-256: 834cce781ba06321b9fd38fbb58a145cd56f965827bc4cd9a20aebdab5a9fd8b
font_01_sfnt_off00007027.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7027 10684 bytes
SHA-256: 3ae0f5e6b808011d9482c85da4b07ba401dd24004f38badfb0771b1607189b04

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