Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b24d09d9aab30a7…

MALICIOUS

PDF

40.5 KB Created: 2020-08-06 02:17:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6d6094472e16c378d51a2e6f2f09d7ef SHA-1: 224e17d4cea3b16f50633185644fff49fedd12ce SHA-256: 4b24d09d9aab30a7b18277d1a18e1d4869a138bd76788823f16c896a55dd66e4
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic. One of these links, https://ttraff.ru/wb?keyword=silencing%20the%20mind%20pdf, is flagged as a malicious redirector. This suggests the document is designed to lure users into clicking these links, potentially leading to phishing sites or malware downloads.

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/wb?keyword=silencing%20the%20mind%20pdf In PDF document text
    • http://files.timberridgewolfdogs.com/uploads/1/3/0/7/130775747/wiwomuvi.pdfIn PDF document text
    • http://files.jdbctax.com/uploads/1/3/1/4/131437472/3255115.pdfIn PDF document text
    • http://files.crescenttrail.org/uploads/1/3/0/8/130813667/942049.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/1/0430/7006/2754/files/pukusofofumuxuno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8833/9361/files/99084767359.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9444/2145/files/84754290685.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5505/5002/files/86255262217.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8524/2276/files/catholic_apologetics_study_bible.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1891/0876/files/foopets_log_in.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0285/3538/files/contrato_de_anticresis_ejemplo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4975/4519/files/28199064036.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0992/3493/files/outlaw_rogue_leveling_talents.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8291/6767/files/gefovunuwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5089/9368/files/35181595591.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5706/7685/files/fapukowodotidusavikafo.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 5

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_off00006233.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6233 5188 bytes
SHA-256: 3a43538728be013cb06ae0ca248a0f5fee9ab30da1559b2fa90d14f5a2ebfdb6
font_01_sfnt_off000073ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73BA 9852 bytes
SHA-256: b00c6a6aa06fac60294fcbd0c564efbbca13bb7d9243160e3798b64fec5a8688

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