Malicious PDF — malware analysis report

Static analysis result for SHA-256 b00f500f7b5b4950…

MALICIOUS

PDF

36.8 KB Created: 2020-09-12 11:52:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 40b6e464a31b8bd006b8e6fc743e9d06 SHA-1: 6b430f7b5442630f2575989d81894a1a156fa32d SHA-256: b00f500f7b5b495007d628414afe77cad3f17964de471e3159c19d4f31cdbdf4
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure, specifically 'https://ttraff.me/pify?keyword=conhost.+exe+windows+7'. This suggests the document is designed to lead users to malicious content through a chain of redirects. No scripts were extracted, and the document body was heavily obfuscated, making it difficult to determine the exact nature of the lure beyond the link farm.

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.me/pify?keyword=conhost.+exe+windows+7 In PDF document text
    • http://dawigo.justinedaisuke.com/uploads/1/3/2/6/132695780/2b81ae5d.pdfIn PDF document text
    • http://wobufal.amommachoosingjoy.com/uploads/1/3/1/4/131406071/narag_mijixug_jifabiwaza.pdfIn PDF document text
    • http://files.moderntactical.org/uploads/1/3/1/0/131070849/mapajapabodizaj.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/1/0433/5013/0846/files/90310827534.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3939/0872/files/antispasmodic_drugs_classification.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1769/9477/files/kejigiwikoterixe.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/11f207_c7afc23426ad463192c51817daa9b6f3.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/4ae4db_eb4d0777c0914e2e989872d14e177ca0.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/7921d2_58a8d1e1b860497599aa689cac10f806.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/011e4b_662e43f015f243518eb1c2542da59dfb.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/31593d_6f107d79f0854e68a56c25cf813d6129.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/bae363_172675aff16f4c4385790b35cc28e926.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_off00005385.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5385 4752 bytes
SHA-256: 802040fe835794d92910c41a939ee5b318d26194f8e15b6c52208d4dadf6f024
font_01_sfnt_off000063d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63D1 10160 bytes
SHA-256: 09847d6eaacec00ce60cab4756ca64753acf887ecf5cd4ba15b9967cf54795aa

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