Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d7c942803b1e0d7…

MALICIOUS

PDF

43.2 KB Created: 2020-08-07 01:17:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4f6f537501147a7905c153136bc7da9f SHA-1: 7a68179fa188480019db90f0e7ca46ea47512aba SHA-256: 4d7c942803b1e0d740d5a0fee96831f72b2f34520ff5f619cff42d024cd7c0f7
194 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. This suggests the primary attack vector is to trick users into clicking malicious links, likely leading to further compromise.

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=carbohidratos+de+absorcion+rapida+pdf In PDF document text
    • http://files.starpropertygroup.net/uploads/1/3/1/3/131381376/wimorodukobedumarar.pdfIn PDF document text
    • http://files.ourlitkit.com/uploads/1/3/0/8/130814515/tedag-waluzuvesi-jubomegubafebe.pdfIn PDF document text
    • http://pudole.alakaiheritage.org/uploads/1/3/1/4/131437736/88dd1.pdfIn PDF document text
    • http://files.gsmtennisexperience.com/uploads/1/3/1/3/131397987/zejusiwitidi.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/1/0434/0006/9283/files/manolovusidowenesulu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6704/0163/files/blm_manual_of_surveying_instructions_2009.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8434/8569/files/risapo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5393/0904/files/long_term_capital_gain_tax_rate_for_ay_2020_20.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8072/8224/files/gedebivawidalarujuku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3041/3475/files/58742584142.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2172/9955/files/chemical_reactor_analysis_and_design.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8695/4140/files/da_form_2166-_9-_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7276/6631/files/60932264022.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2512/1959/files/youtube_subscriber_tracker.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0446/8134/files/88819125029.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7729/5516/files/katisagu.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 2

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_off0000689b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x689B 5256 bytes
SHA-256: 9454b55694a0dbd6caf7fabbe82c00ec8032e2f116c9af72ef8e6547dccf1fec
font_01_sfnt_off00007a6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A6B 10928 bytes
SHA-256: aa26896ecf9120d944674b12862e498d0bed3a9ffda77a6cc15cdc057e321a5d

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