Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fb4e7dc6d63ad0d…

MALICIOUS

PDF

51.6 KB Created: 2020-08-19 12:16:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 327475dbe79aaa045c71710e6ff5b055 SHA-1: d0b2cb4d158517fc85f9d0fcebef60054cf022e3 SHA-256: 7fb4e7dc6d63ad0d7c775ec9bbfeb874290e17d1e0dc50268bbd23495887ee01
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged as malicious by multiple heuristics, including a critical alert for linking to known malicious redirector infrastructure. The document body contains a URL that points to a redirector, which in turn links to a large number of other PDFs, suggesting a link farm or SEO manipulation tactic. The primary malicious URL identified is https://ttraff.com/pify?keyword=mathematical+operations+questions+and+answers+pdf, which is likely used to funnel victims to malicious content.

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.com/pify?keyword=mathematical+operations+questions+and+answers+pdf In PDF document text
    • http://files.culturalartnetwork.org/uploads/1/3/1/1/131163550/2350439.pdfIn PDF document text
    • http://files.grayboxprojects.com/uploads/1/3/0/9/130969817/memevubukaboleteluza.pdfIn PDF document text
    • http://nobararav.sgvha.com/uploads/1/3/2/7/132740405/4bb32.pdfIn PDF document text
    • http://lusij.ashlynnsboutique.com/uploads/1/3/1/0/131070786/ludizatifun.pdfIn PDF document text
    • http://dokagosa.rockintdranch.com/uploads/1/3/1/4/131406970/300f4926e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1425/0905/files/research_article_review_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6599/7472/files/basic_of_java_language.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0549/2904/files/49814502304.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1585/4490/files/kuzaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8764/3303/files/71900998933.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9007/4016/files/core_java_practice_programs_for_beginners.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0944/1953/files/sivemuzigem.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ef4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EF4 5500 bytes
SHA-256: 79ba4bb6c930b4094ad7c9d1284659a9b94ec6e1bde3db08fa6b555e08ea4118
font_01_sfnt_off0000718d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x718D 13312 bytes
SHA-256: ee68113739f20b87b2c2af24e890c3d78c6c61356ba55a7f725f413469e64c77
font_02_sfnt_off00009c27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C27 16472 bytes
SHA-256: e62c858c4bfb0cbb41e66f6202ad2833c136164b7d6efaed4ec76821c444b125
font_03_sfnt_off0000b238.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB238 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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