Malicious PDF — malware analysis report

Static analysis result for SHA-256 33e08f2c6867f363…

MALICIOUS

PDF

46.0 KB Created: 2020-08-23 09:41:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 27e68e7d0eb1d7e5eab5d75028330f35 SHA-1: af737989a247d17742142b91f137b7851636611c SHA-256: 33e08f2c6867f36353c9e7ed8bf47015094d33c31a8dd3a447a91cf34f14f6d6
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector. This redirector leads to a URL that appears to be part of an SEO link farm designed to phish for information or deliver malware. The ML classifier strongly indicates maliciousness, and the presence of redirector links points to a phishing or malware distribution attempt.

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=riesgos+de+los+aditivos+alimentarios+pdf In PDF document text
    • http://files.balancedintelligencegroup.net/uploads/1/3/1/0/131069789/8126840.pdfIn PDF document text
    • http://files.bondosaka.com/uploads/1/3/2/6/132682342/5770822.pdfIn PDF document text
    • http://benuveve.andreanelson.studio/uploads/1/3/1/1/131164128/turajoturowov_fezuvesusanabaj_lelobafobixasod.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/1/0437/7011/8302/files/ignou_assignment_front_page_design.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0455/7469/files/70350057543.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9901/2766/files/minecraft_1._13_pc_full_version.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2995/4721/files/muxunorojenogafarado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9845/5705/files/advanced_excel_training.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3237/1622/files/46962580699.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9919/9390/files/champions_league_schedule_2020_20.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0818/6792/files/65_country_code.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sovir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9220/5978/files/tapuwinopodew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/all_adverbs_in_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/4307/2674/files/aqw_legion_revenant_class_guide.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 5

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_off0000727a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x727A 5428 bytes
SHA-256: 5bca985810fdbc3ea1b444427754e9661b88e7bb4c6d372a73b7f6e1f1a26d82
font_01_sfnt_off000084e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84E6 11096 bytes
SHA-256: a2283cd243ca11fa7998e863ef46a078acb422741a91e4cf2d6f5b99cd69b9f7

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