Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef016bd9861aed07…

MALICIOUS

PDF

43.9 KB Created: 2020-08-10 08:45:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e5ad1d8594c9500b61b369deb403386f SHA-1: adc82a7db597586e2cd53d3abd968b363dd8d7b2 SHA-256: ef016bd9861aed076f427c0779df00fb6a5785324f278eeac0814c914c5cd973
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=jurnal+islam+dan+budaya+jawa+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. Additionally, a large number of external PDF links were found, suggesting a link farm or SEO poisoning attempt to increase visibility of malicious content. The ML classifier strongly supports the malicious nature of this PDF.

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=jurnal+islam+dan+budaya+jawa+pdf In PDF document text
    • http://defejuxux.oulalosangeles.com/uploads/1/3/1/4/131437604/wapafeva-popavav.pdfIn PDF document text
    • http://files.andreadesmond.com/uploads/1/3/1/3/131384660/madav.pdfIn PDF document text
    • http://files.brandgenius.com/uploads/1/3/2/6/132682737/b680ac48.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/1/0430/6812/9441/files/problems_faced_by_adolescent_in_school.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8676/4446/files/udp_tracker._thepornvilla._com_6969_announce.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0831/8878/files/gotasutudifula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0622/0712/files/introduction_to_java_programming_9th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6866/8569/files/90330156639.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0575/2997/files/adobe_scan_scanner_ocr.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8728/0790/files/rurububegufer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7335/3381/files/lepokalerej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0974/4789/files/ruzolijiritewanovino.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1754/3588/files/d_d_monsters_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0829/4044/files/7398897255.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3893/3146/files/jofolafije.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_off00006bfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BFC 5588 bytes
SHA-256: 4d3aaa0672455b8e09b50acd08825896aa9054f19f1cd60169b10e4998280784
font_01_sfnt_off00007ef8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EF8 10500 bytes
SHA-256: efd62d332af5fa66ddc22848fc698a75eb20a112f4d72d75b005db868d533e3f

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