Malicious PDF — malware analysis report

Static analysis result for SHA-256 feb281bfd7cf8eaf…

MALICIOUS

PDF

44.0 KB Created: 2020-08-02 16:55:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9f88f777131cdf5049d47fffa99f83a7 SHA-1: 7974a1eba017adebb1e7af5a7e29346c8e6c4824 SHA-256: feb281bfd7cf8eafb35a16449ec98747c6ba04ea5315a63f31e7067ff09dc245
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains references to URLs that are likely part of a link farm designed to distribute malicious content. The ML classifier also strongly indicated maliciousness. The primary attack pattern involves luring users to malicious sites via these links.

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=god+of+war%253A+betrayal In PDF document text
    • http://files.nadirbouhmouch.com/uploads/1/3/0/9/130969312/3360884.pdfIn PDF document text
    • http://files.ethnotricity.org/uploads/1/3/0/9/130969209/sukexivomukuresilax.pdfIn PDF document text
    • http://jimov.childrenareourspecialty.com/uploads/1/3/1/8/131856476/toxoz.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/1/0427/8288/4006/files/sozojejiwovoverodemafodon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6572/9429/files/tekunufubawetofil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3849/9235/files/nejolenivelive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6067/4198/files/pibodemepik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2468/4968/files/50325588509.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3407/5558/files/9179735261.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1342/0702/files/jupofixidasojose.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/puwojadudabub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9027/1642/files/nufabiwun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2873/2314/files/napeji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89120948070.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0118/4417/files/49966804356.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7754/9726/files/kanulobesugutefexav.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 1

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_off00006ecf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ECF 5136 bytes
SHA-256: c8d8d63fa6345ff9ca0d9c91da2fe8806f23d9194b48a5116b5ece09cba7edf5
font_01_sfnt_off00008075.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8075 10088 bytes
SHA-256: 7f6bdffa99e5668edf864bd4d41fe5542c814e845492d0b8d26df1ef09455122

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