Malicious PDF — malware analysis report

Static analysis result for SHA-256 15cbb95fa8d188cb…

MALICIOUS

PDF

44.5 KB Created: 2020-08-10 21:02:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9d71dc55e957e878641b95ca41e43c8a SHA-1: 31a0ef94dddfee801aa876f3b45c8c5975006b82 SHA-256: 15cbb95fa8d188cb5805ddc8f395b6b4966dca7aaa55d13146a8cebed854f3df
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external resources, many of which are hosted on Shopify and appear to be part of a link farm designed to attract search engine traffic. The primary redirector URL, 'https://ttraff.cc/pify?keyword=libro+beber+agua+de+mar+pdf', is flagged as malicious and likely leads to a phishing or scam page. The ML classifier also strongly indicated maliciousness.

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=libro+beber+agua+de+mar+pdf In PDF document text
    • http://files.caywoodhandbook.com/uploads/1/3/0/7/130740571/digivi-laxob.pdfIn PDF document text
    • http://sageledo.honoroneself.com/uploads/1/3/2/7/132740541/5184942.pdfIn PDF document text
    • http://wanox.usaboxingmetro.com/uploads/1/3/0/8/130813528/4d045a0.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/1/0436/0588/5090/files/19692877123.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4255/9384/files/atlas_lathe_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3013/4427/files/zipemoneruvedibega.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8866/7034/files/fanaxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8903/4402/files/12758686438.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3499/9975/files/gopigenubopi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6899/7283/files/52068527952.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7274/9721/files/92589786636.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2403/9592/files/gatoxumaduwuviluxudabamum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0739/3439/files/kukeronirusizus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5891/2662/files/amazing_grace_picture_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9886/4804/files/chuyen_doi_sang_jpg_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9095/8752/files/palmistry_in_bengali.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0240/4769/files/85915055369.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_off00006139.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6139 4928 bytes
SHA-256: d92963bfdc5ebf7ceb0dfae29677eb113dfb0dde67fad9073c1c25e79640eaa8
font_01_sfnt_off000071f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71F4 11364 bytes
SHA-256: 8d3004964ff5a6b243cd0de7a641fc6a02d6225536bd7fb2309690547856f50c
font_02_sfnt_off00009709.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9709 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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