Malicious PDF — malware analysis report

Static analysis result for SHA-256 deb5bef188f10bf6…

MALICIOUS

PDF

53.9 KB Created: 2020-07-31 04:18:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8427a19d78be1d9d5ad5e953c4f1dd21 SHA-1: 21c9b6776b890324232829d5eee43b2ff69fc474 SHA-256: deb5bef188f10bf6e8730521da766bb3cb98e1fb73704fbddb8123a079b9a821
194 Risk Score

Malware Insights

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

The PDF file contains a malicious redirector link disguised as a link to self-help books. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic firing confirms this, and the PDF_SEO_LINK_FARM heuristic indicates a large number of similar links were generated. The embedded URL leads to a redirector that likely serves further 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.cc/pify?keyword=best+self+help+books+of+all+time+pdf In PDF document text
    • http://files.newrenaissanceink.com/uploads/1/3/0/9/130970004/d0bdac9d6.pdfIn PDF document text
    • http://files.dlfinancial.org/uploads/1/3/1/3/131379749/tobij.pdfIn PDF document text
    • http://files.desotoyou.com/uploads/1/3/1/4/131452988/wojimemulol.pdfIn PDF document text
    • http://files.ssatroop3.com/uploads/1/3/2/6/132681409/batitifanuf-tekixuri-nugolabalif-liwupujirebajo.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/1/0436/9914/2810/files/jixegakawinomonesovoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8740/4968/files/69394338391.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6246/0577/files/86219515533.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6314/8706/files/bafivegajukoraguxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9052/5849/files/9039605916.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5905/9615/files/gizasutuwex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2996/8534/files/vadafavabaluwoba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6042/8962/files/diwovebokexetoxofiwun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6933/3916/files/vuzokuwinarezowajipiboku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7235/6514/files/neterozu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0896/6312/files/denoxuwofasagiwaberasiba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/46824776831.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008b2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B2E 5120 bytes
SHA-256: 0c089a6ed79412f899ae822e62f38853bfcc85a716fafcf277682ea344992f1b
font_01_sfnt_off00009c8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C8F 2444 bytes
SHA-256: 4ae8fac4ab76fd2f0cc73f0125a8dac720b8ba70953040776cd8a8b9a4729da1
font_02_sfnt_off0000a636.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA636 10296 bytes
SHA-256: ef0e42c1f305f7e974b8be29e98f9dc601b92230aa9e99098598e0dab87ed8e8

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