Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a63f92147e3f028…

MALICIOUS

PDF

38.3 KB Created: 2020-08-08 18:42:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 929fef7647fc95088c15229e4fb7b984 SHA-1: d65851b5a346a29109fdd1bd62cef721e29c1f83 SHA-256: 7a63f92147e3f02832afaa139bc8a9211353095f8a447a57d89dddab617071ec
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with a primary redirector pointing to a link farm of other PDFs. The document body text and heuristics indicate a lure related to 'online video converter pdf to ppt', suggesting a phishing or scam attempt. The ML classifier strongly flagged this PDF as malicious.

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.com/pify?keyword=online+video+converter+pdf+to+ppt In PDF document text
    • http://files.krptsa.org/uploads/1/3/2/6/132681674/62f40.pdfIn PDF document text
    • http://files.stmarksdancestudio.org/uploads/1/3/0/8/130813992/f72076530.pdfIn PDF document text
    • http://files.revartcolorado.com/uploads/1/3/2/7/132712358/firelel.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5555/2414/files/telugu_bible_nighantuvu_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9606/4671/files/48548620726.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7188/0870/files/28412436374.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3539/2150/files/14362555165.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2531/8563/files/22458571815.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5905/2706/files/xinatobemejerit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2011/5358/files/newof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8991/1196/files/25610438303.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4865/7311/files/baofeng_uv_5r_manual_greek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4556/0219/files/eclinicalworks_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6748/7894/files/8608796369.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8976/5276/files/depodudoma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1216/1685/files/biotecnologia_agricola_libro.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004c0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C0D 4636 bytes
SHA-256: 3fb670b3f2c42849b8674ac2fe1ac09e33deb42ebe1611bc5b01107bc5465494
font_01_sfnt_off00005be2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BE2 10024 bytes
SHA-256: 598a1e97fef4969b9a56b480adc46f0a516d051f169cea3687c65f6dce2af0cc
font_02_sfnt_off00007e3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E3B 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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