Malicious PDF — malware analysis report

Static analysis result for SHA-256 1000ff2023779b0a…

MALICIOUS

PDF

71.9 KB Created: 2020-08-19 13:15:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 43cead97fc2214c2ea5d33825049d07d SHA-1: 9193539034c53274ca2a1ff1a462ad6a38cf93d0 SHA-256: 1000ff2023779b0a1400caa128a03e2cd6a5f8466f0fee57537fd4e3b58819e0
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple heuristics indicating malicious redirection and a link farm, including a critical finding for a PDF redirector link. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector found in the heuristics. This suggests the document is designed to trick users into visiting a malicious website, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=lipids+journal+author+guidelines In PDF document text
    • http://files.arlingtonmsband.com/uploads/1/3/1/6/131606087/ddee7.pdfIn PDF document text
    • http://files.mmbasketball.com/uploads/1/3/2/6/132695321/muzem-wiruru-jowapegogejeji-nixifatofep.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/1/0434/4391/2854/files/travel_magazine_layout.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/52325197595.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4066/9849/files/fapimododuvitodalasetinod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1128/4893/files/53145588767.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8346/3832/files/63694966173.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3342/0195/files/vefana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/49091229035.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7862/2111/files/advanced_english_vocabulary_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8330/8955/files/bibitupisuwezixazudajul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2486/5685/files/69747969294.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6943/9141/files/1207174260.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2406/3392/files/john_maxwell_5_levels_of_leadership.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7990/9028/files/perafofujekan.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_off0000dc1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC1A 5236 bytes
SHA-256: 40558ec74058464baf2c76393f5647277f6bb7622a9b78ae070e93d7c528591d
font_01_sfnt_off0000ede9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDE9 10700 bytes
SHA-256: 21e9ec918e70159c2fec469f6e8fa8e49c152cfe99360093c992c6c2b2603389

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