Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3770868fb379070…

MALICIOUS

PDF

43.1 KB Created: 2020-08-12 12:21:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e7bef15eccc8a2637258ef8428f28c71 SHA-1: 38105a68fc695640c37de010b2207e61fc5d3859 SHA-256: c3770868fb379070af9b2bcff11a7aa05a1ce1bf720ed2b7c77f467143351401
194 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as legitimate documents, but the primary link redirects to a malicious URL. The ML classifier strongly indicated maliciousness. The document body, though heavily obfuscated, contains the malicious URL and references to other PDFs, suggesting a lure to download further content or redirect 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.cc/pify?keyword=checkmate+cessna+172n+checklist+pdf In PDF document text
    • http://files.finelytunedvoicelessons.com/uploads/1/3/2/6/132680901/7848079.pdfIn PDF document text
    • http://files.ciai-fondazione.org/uploads/1/3/1/8/131856706/3312883.pdfIn PDF document text
    • http://files.openmindspromotions.com/uploads/1/3/1/4/131410485/696eb45e18f2.pdfIn PDF document text
    • http://files.radioramadhan.scot/uploads/1/3/1/4/131453045/7340182.pdfIn PDF document text
    • http://files.seniors-who-care.com/uploads/1/3/1/4/131438216/netemefalilaneroxoro.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/1/0432/0228/1633/files/57674676804.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1715/0368/files/lurawotafakiguzizal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8385/8073/files/toputal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6225/3978/files/kerug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3296/0409/files/cameron_diaz_body_book_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6780/8667/files/lixarefo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mogapusezonoxifetomo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1327/5811/files/rawafujedavimix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8794/4096/files/49058802289.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2186/7930/files/10322134445.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6470/4665/files/fevajafu.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006002.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6002 5532 bytes
SHA-256: 3b8b7cb3c4db6aff7ac3ea6704ba40d56c01dcc3c5fcded4ddeec99080077acc
font_01_sfnt_off000072be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72BE 14140 bytes
SHA-256: 941e4ee748300dea306723862cca9c7d4b0fd8f5d65b56f607e395fd9f646aa3

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