Malicious PDF — malware analysis report

Static analysis result for SHA-256 7995886b9851c4c8…

MALICIOUS

PDF

34.7 KB Created: 2020-09-18 20:31:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6d909d7b6bba8ec9fb0c9ef02adf65cb SHA-1: 9e37235d0d47d212f3793b3938712f77d128149f SHA-256: 7995886b9851c4c8b9dfd4b23d096dc4a71700d82fc6d05646d571e90be3ca0b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, many pointing to redirector infrastructure and SEO link farms, indicating a phishing or malicious redirection attempt. The ML classifier strongly flagged this PDF as malicious, and heuristics confirm the presence of malicious redirector links. The document body, though heavily obfuscated, contains the target URL and other linked PDF documents, reinforcing the malicious intent.

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.me/wix?keyword=skyline+ranches+amarillo In PDF document text
    • http://files.mcnshipwrights.com/uploads/1/3/0/7/130739182/4553314.pdfIn PDF document text
    • http://files.propellertherapy.com/uploads/1/3/0/8/130814466/4855845.pdfIn PDF document text
    • http://wufal.playyouth.org/uploads/1/3/1/3/131381352/1058218.pdfIn PDF document text
    • http://zited.blinkgatproducts.com/uploads/1/3/1/3/131383621/vuperipamal.pdfIn PDF document text
    • http://files.dynamicpolicetraining.com/uploads/1/3/1/0/131071067/49570.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/1/0432/3475/4715/files/50825327542.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9945/4628/files/44671561650.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0500/8280/files/great_are_you_lord_chords_b.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7209/4362/files/toxic_extract_graveyard_keeper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3500/7893/files/84888285174.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/1812/0100/files/24595726019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2806/8005/files/90836029662.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0467/7373/1481/files/hasi_female_mp3_song_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/4707/6259/files/aopc_search_warrant_forms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7555/7793/files/electrolux_washing_machine_parts_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7027/5237/files/nosaxisaxatafojimekujal.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_off00004bbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BBD 5308 bytes
SHA-256: 5aa07774561a8f8bdeab5f3e1bc005324b6a60373f32864e2c116a5a72d5f6b5
font_01_sfnt_off00005da5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DA5 9480 bytes
SHA-256: b654a89080e5ba18292631ef44565a6f0fbc75628bfb482407f2afa2792a89c4

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