Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0433d462a1abfd9…

MALICIOUS

PDF

52.7 KB Created: 2020-07-23 14:47:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 33d606ed05b4608ebc13f5f55a89f739 SHA-1: 00e771335468348c2efe699df078a104dc98c16b SHA-256: e0433d462a1abfd9756167cfc4b3750164fa994ed01e71904deec7c536a24caa
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to a redirector service known to host malicious content. The ML classifier also strongly indicated maliciousness. The primary attack vector appears to be a link farm designed to redirect users to malicious sites, leveraging the 'ttraff.ru' redirector.

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=python+string+format+escape+quotes In PDF document text
    • http://files.coplaypubliclibrary.org/uploads/1/3/1/6/131606491/5407903.pdfIn PDF document text
    • http://files.sdpermits.com/uploads/1/3/2/6/132681494/zaninobu.pdfIn PDF document text
    • http://files.utahsreptilerescueservice.org/uploads/1/3/1/1/131164351/ribifitoxude.pdfIn PDF document text
    • http://files.patriotplayhouse.org/uploads/1/3/1/4/131406352/3a974125.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/1/0428/9835/8432/files/marifurozijuzaledenikegi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6285/3794/files/84014160314.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4942/6839/files/66828335162.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8205/4813/files/34770475064.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9291/1007/files/jopepavawukex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7278/2489/files/xesoligujimuviderej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3287/0037/files/25206454945.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2636/6116/files/redanifexizavoliwawig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6310/0070/files/gugorexer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6487/6453/files/84605717586.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/vikokojitekexubira.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0897/4235/files/51338295727.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4760/0796/files/nikufisaxivemelij.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 4

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_off00008c09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C09 5508 bytes
SHA-256: 964f7f286d3cd483724b83a639255ac7a6fbeedec45fc4a99fb6736982b3550e
font_01_sfnt_off00009e99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E99 11652 bytes
SHA-256: 834789a51f0b4c7810ac1a94316420fae7e2306b115bc657de484949821c651e

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