Malicious PDF — malware analysis report

Static analysis result for SHA-256 30689b9ebecfb4c1…

MALICIOUS

PDF

39.8 KB Created: 2020-07-30 16:11:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: df5c1d5ebeb6a9e446da477047913d79 SHA-1: 4c0dcd42657d4a75b1b31440d9d2a80db3c80af2 SHA-256: 30689b9ebecfb4c15db6f934f1e20b8a89779020cccc50bbff380cd10fea7bf9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a large number of embedded links, with a significant portion pointing to a known malicious redirector. The document body, though heavily obfuscated, suggests a lure related to a 'Pequeno catecismo catolico pdf'. The presence of PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM heuristics strongly indicates a malicious intent to redirect users to harmful sites. The ML classifier also flagged this PDF with high confidence.

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.ru/pify?keyword=pequeno+catecismo+catolico+pdf In PDF document text
    • http://files.faithisfamily.org/uploads/1/3/0/7/130776267/7126b.pdfIn PDF document text
    • http://files.symmetry-careers.com/uploads/1/3/1/4/131454699/razulil.pdfIn PDF document text
    • http://files.standupstudios.com/uploads/1/3/0/7/130739696/3399f7.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/1/0439/0410/6651/files/tufizetekogibode.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7152/7325/files/12834941818.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1747/0101/files/44440023431.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5507/0880/files/vegebivived.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8512/8099/files/53482760137.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7249/5524/files/sotixajume.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0381/3781/files/xiketujezifem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4054/6721/files/78571278125.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8076/0990/files/gasafagowezakonipotiduxap.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_off00005eb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EB3 5216 bytes
SHA-256: 7e8bed1be36042c99e53dff04d093248223e454e89b7a0299f40cd01ea990876
font_01_sfnt_off0000705a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x705A 9896 bytes
SHA-256: f50c8ca01d14d47f658f4425c358ec7fc0fccc3b1c56da0d21541967de321667

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