Malicious PDF — malware analysis report

Static analysis result for SHA-256 422c5f59bff6e12e…

MALICIOUS

PDF

64.6 KB Created: 2020-08-26 05:15:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: db366c95849ab5858fa1bd077e89e738 SHA-1: 5d79790ecb5b0ab7b9870b5d82e2b08b25c115da SHA-256: 422c5f59bff6e12ee71ecd675eb650c4b26bff3d2c454a7a7f619eda8bbe6c7a
194 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics indicating malicious redirector links and a link farm. The ML classifier also strongly indicated maliciousness. The document body contains a URL that matches the redirector heuristic, suggesting the primary purpose is to lure users to malicious sites.

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=ideal+d%25C3%25BCzenin+olabilece%25C4%259Fini+kabul+ed In PDF document text
    • http://files.wildhorsesnevada.com/uploads/1/3/0/8/130874067/3089185.pdfIn PDF document text
    • http://files.skardamaplefarms.com/uploads/1/3/2/6/132681836/5174281.pdfIn PDF document text
    • http://timufinef.catherinebeerdabasso.com/uploads/1/3/0/8/130814674/nazuriwuguzoku.pdfIn PDF document text
    • http://wamixig.balletfolkloriconwi.com/uploads/1/3/1/3/131380771/xiwoguxarodewilezuf.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/1/0430/9726/0192/files/22316743638.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3834/3322/files/faxebemugomo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0643/5232/files/3883969722.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4550/9537/files/enchanting_guide_world_of_warcraft.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6011/8175/files/58051129699.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2960/0168/files/lesson_plan_template_nursing_education.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8652/8155/files/broken_hearted_girl_piano_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9845/4682/files/tupevojuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6423/7992/files/boxujevabukipipirufogo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5358/0437/files/36326194900.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0531/2154/files/14153320872.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_off0000b277.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB277 5200 bytes
SHA-256: 7789a223fe402a2c611c76b6a0240e15e0ad502897b0943110811d38e92a1636
font_01_sfnt_off0000c408.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC408 16112 bytes
SHA-256: affa333269cb101e1e1b827d6be25f842286b315b46281a741fac825ff13f6be

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