Malicious PDF — malware analysis report

Static analysis result for SHA-256 18d84c6f33a703ab…

MALICIOUS

PDF

40.1 KB Created: 2020-07-31 15:20:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d0ba09336b087d03ad9110c0e908a985 SHA-1: 2257b200a23174cbad3c9b47d1ca50eeb120fdc4 SHA-256: 18d84c6f33a703abbdf8acd7c8c395359d750618ed7ff3d719e32ed428a4764d
194 Risk Score

Malware Insights

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

The PDF contains numerous links designed to appear as search results or download links, leading to a redirector URL. This indicates a phishing or scam attempt, likely to deliver a malicious payload or lead the user to a fraudulent site. The ML classifier strongly supports the malicious verdict.

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=saxon+algebra+2+answers+pdf In PDF document text
    • http://files.granitegalleriakentucky.com/uploads/1/3/1/3/131379748/toluja_resefajukajot.pdfIn PDF document text
    • http://files.morningglorylabradors.com/uploads/1/3/0/7/130739340/1671295.pdfIn PDF document text
    • http://files.lawsynagogue.org/uploads/1/3/2/6/132696249/tumosare-vetol-vugos.pdfIn PDF document text
    • http://files.tpd-art.com/uploads/1/3/2/3/132303269/3665367.pdfIn PDF document text
    • http://files.truenorthcommunitychurch.com/uploads/1/3/0/8/130873893/nopovuxebam-fazavekit-darejagafe.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/1/0431/1446/3394/files/80922349295.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3414/7989/files/migavebuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2376/0536/files/zewijomop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9910/2115/files/66992264666.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3672/8744/files/fulisupulawo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5327/7589/files/48060405753.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/gijuridifojarovanozuzi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6558/1468/files/74891823753.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1381/6995/files/66594681122.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9005/9176/files/jupove.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7803/1262/files/11502437349.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4244/8295/files/31496908062.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7079/1573/files/wefonefuk.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_off00005f9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F9C 5404 bytes
SHA-256: 0f0b722b7b70036c24e80540505356e5222ae0bf7f0c5ac31646ccebb1bca085
font_01_sfnt_off00007209.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7209 9700 bytes
SHA-256: 7adbf298adf6c2851e06748546e70e90cb976ba585f79f89d36e3c77a90b480d

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