Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa3b541bbf31373b…

MALICIOUS

PDF

43.1 KB Created: 2020-08-25 18:20:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 761000b18d6ad2df4d09733c45483c15 SHA-1: fe92564d39f8220e1964049677a6aac0eb1206d9 SHA-256: fa3b541bbf31373bcac8c39dca66328a06ff32f7042ae71616bab531694b357e
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, identified as a link farm. One of the primary links, 'https://ttraff.cc/pify?keyword=todas+as+alternativas+contem+um+par+de+for%25C3%25A7as+a%25C3%25A7%25C3%25A3o+e+rea%25C3%25A7%25C3%25A3o+exceto', is flagged as a malicious redirector. The document body, though partially corrupted, contains text related to physics principles and mentions the authoring application, suggesting a deceptive lure.

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=todas+as+alternativas+contem+um+par+de+for%25C3%25A7as+a%25C3%25A7%25C3%25A3o+e+rea%25C3%25A7%25C3%25A3o+exceto In PDF document text
    • http://files.portlandtnrotary.org/uploads/1/3/0/7/130775892/d15662557.pdfIn PDF document text
    • http://files.dollsforeverychild.org/uploads/1/3/0/7/130739399/pamax.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/1/0431/6489/3344/files/56052160528.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2667/7913/files/67568893831.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7302/7749/files/guwobid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2470/9794/files/rectification_of_errors.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3826/7809/files/dupapowupoteg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/2935/1835/files/zuvojafupotexerugukawa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2159/6834/files/20793730834.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7131/5876/files/78434876334.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5317/0334/files/install_wine_on_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6314/8706/files/nerefe.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_off00006343.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6343 5876 bytes
SHA-256: 875ef76fcbd60257baa76415e9de02eaf1c0caa5051b56f70dd9ab24af0f8462
font_01_sfnt_off0000765f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x765F 12676 bytes
SHA-256: 7a811b98e46dd9eb0a02385919557217c3664625d75315d1926fcc277c33389c

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