Malicious PDF — malware analysis report

Static analysis result for SHA-256 70890039014c595e…

MALICIOUS

PDF

51.5 KB Created: 2020-07-30 16:39:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4e5cf6d8e2488334be10cb070e2787b7 SHA-1: cf50d366918c10921dabae1c486a12c034002b9a SHA-256: 70890039014c595e54453e78df33ac313c85bce62c5b569cfd0da21c7ab73cc4
194 Risk Score

Malware Insights

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

The PDF contains numerous links designed to appear as free downloads for popular content, such as 'Berserk volume 17 pdf'. These links predominantly point to a redirector infrastructure, indicating a phishing or malware distribution attempt. The ML classifier strongly flagged this PDF as malicious, and the presence of embedded links to known malicious redirectors confirms this assessment.

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=berserk+volume+17+pdf In PDF document text
    • http://files.willametteleadershipacademy.net/uploads/1/3/2/8/132815370/43843c0cd597.pdfIn PDF document text
    • http://files.toneeke.com/uploads/1/3/1/3/131398194/2bdad9b303.pdfIn PDF document text
    • http://files.dididiphotography.com/uploads/1/3/0/8/130874250/4886248.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/1/0433/4108/6888/files/fikiwegitazunek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2195/9325/files/4178153464.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4162/8072/files/tosezavewenajoziv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2140/9184/files/risuxavunaxuvumeruguze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0723/7531/files/17431505941.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9420/4825/files/kilopaketivesoxut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8174/1976/files/44305150925.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5680/6565/files/noriko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6713/7438/files/81339995536.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6352/5029/files/dolobudizaxejosoza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7449/4369/files/jinilekefowabeno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1610/1781/files/rekubodeton.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1945/2063/files/66695572563.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 3

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007178.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7178 3616 bytes
SHA-256: 567785245ac8c48a8081ab0d3c573f4cfe183f6d5ea248ef48a10856f2931e5f
font_01_sfnt_off00007e59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E59 4928 bytes
SHA-256: 69db2017280d7b32901f286f031c0bab012c00f6a9c4e9ba25e605dbbd50f684
font_02_sfnt_off00008f37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F37 15336 bytes
SHA-256: 27bf1e3dae5aa2ac56b2fa7f4bde55dde7ae8f8564221e3585da0da74136670c

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