Malicious PDF — malware analysis report

Static analysis result for SHA-256 24ef149d1d3fa24f…

MALICIOUS

PDF

54.4 KB Created: 2020-08-05 06:18:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 48534bfb094b020228412fa135934ece SHA-1: 10957ab73f49f2a7015fe914c4ac2419c81eee77 SHA-256: 24ef149d1d3fa24f436813f16ca1190001172db822bb0d621b6e173445237c10
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a mass external PDF link farm, with 24 links pointing to various domains, including a known malicious redirector at ttraff.cc. This indicates a likely attempt to distribute malicious content or conduct phishing by leveraging a large number of seemingly benign PDF documents. The primary malicious IOC is the redirector URL.

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.cc/pify?keyword=aluminothermic+process+pdf In PDF document text
    • http://files.shahrilfaisal.com/uploads/1/3/1/4/131408581/32ebf8ae15.pdfIn PDF document text
    • http://files.simplysweetshopnola.com/uploads/1/3/1/8/131859261/lelapaledesatib.pdfIn PDF document text
    • http://files.heartlandjungians.org/uploads/1/3/0/7/130776841/ziniruper.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/1/0433/6310/6968/files/kivonilabulidabisufuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9219/5993/files/savekano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0990/8642/files/87317852873.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9227/9460/files/28060457784.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5778/3718/files/zobogufo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6307/4213/files/takirazalowesog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0548/3942/files/vasudevan_biochemistry_for_dental_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3477/9553/files/51215874943.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8126/9401/files/toefl_test_papers.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_off00009207.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9207 5172 bytes
SHA-256: 284799e11606c3c00671e01527c6db1c8876532ab4115e782e87be3f895b64ce
font_01_sfnt_off0000a377.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA377 13340 bytes
SHA-256: 4dc3559b3463fb9ab596ead0df47749a7379fd3246b6b66b59e5728cdc634ed3

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