Malicious PDF — malware analysis report

Static analysis result for SHA-256 baff4fa73277b967…

MALICIOUS

PDF

60.3 KB Created: 2020-08-10 21:23:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e4056466be26915cdda7683c346ce46d SHA-1: ba3a4b51790417618a7fa3811ddae143a860366e SHA-256: baff4fa73277b967d16f06278102a8cd246872c6f0f478111663a187bdcd6dce
194 Risk Score

Malware Insights

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

The PDF contains a link disguised as a document title, which redirects to a malicious URL. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms this behavior, and the ML_NYX_PDF_MALICIOUS score indicates a high probability of malicious intent. The document body itself is heavily obfuscated but contains the malicious redirector URL, suggesting the primary goal is to lead the user to a harmful site.

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=decameron+giovanni+boccaccio+pdf+espa%25C3%25B1ol In PDF document text
    • http://files.lcandlepress.com/uploads/1/3/2/7/132741052/3272010.pdfIn PDF document text
    • http://nutivobe.pawcrazy.org/uploads/1/3/2/8/132814930/dekogarezuwusosolipu.pdfIn PDF document text
    • http://fuzeno.joshuanewell.com/uploads/1/3/1/8/131856706/nenofesofake-papimasawugajes.pdfIn PDF document text
    • http://files.tibetsupportgroupyork.org/uploads/1/3/0/7/130776099/5700490.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/1/0433/1801/8216/files/xorodumajinoduvomugarof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2717/6344/files/689618899.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3314/1149/files/rotuvid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5744/5029/files/bitoboguvututubizovisewul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3355/1260/files/53567399047.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1044/8795/files/clustering_in_r.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6302/3518/files/29727622072.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8772/4704/files/damodarastakam_telugu_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2965/9797/files/best_app_for_markup_ipad_pro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6374/6465/files/mewekinadulezuramurab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2937/2832/files/bomifegekozete.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7709/8902/files/todokiku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5647/1959/files/8623439615.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 3

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_off0000a6d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6D8 5884 bytes
SHA-256: 6f2cc942e647f114be09cd84c20296bd84d7e3973cb4423c4ae0cb337d7f46d5
font_01_sfnt_off0000ba8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA8F 11672 bytes
SHA-256: d157d3cf4cad0738403bb481e8f19ebe6534aae75ddf0a1f8846ef0e710c6652

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