Malicious PDF — malware analysis report

Static analysis result for SHA-256 baf4f79bad4bf361…

MALICIOUS

PDF

52.4 KB Created: 2020-08-10 04:57:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 48ec4b6068b34046688bcf8a4706b487 SHA-1: 580c6ac4a1cdb884eb46488bfe7b3e231aa67806 SHA-256: baf4f79bad4bf361875809549b648e65c21ce84c592ccbe3cf01c8d903d87601
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. This is indicative of an SEO link farm, a technique used to manipulate search engine rankings. One of the embedded links, https://ttraff.com/pify?keyword=albert+schweitzer+bach+el+musico+poeta+pdf, is identified as a malicious redirector. No scripts were extracted from this sample.

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=albert+schweitzer+bach+el+musico+poeta+pdf In PDF document text
    • http://files.landwaterscience.com/uploads/1/3/2/6/132695575/vuwonesojile.pdfIn PDF document text
    • http://gilofame.ngravinggifts.shop/uploads/1/3/0/8/130874038/7888284.pdfIn PDF document text
    • http://files.buildingourtomorrow.org/uploads/1/3/1/0/131070137/nifesitukoxekezogev.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/1/0436/4071/7462/files/fepojepajesotil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6923/5619/files/pasar_de_a_word_gratis_y_rapido.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6769/5509/files/dujataf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5593/8725/files/only_the_strong_film.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9455/6324/files/vugaguvogulapezero.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4470/9276/files/tigajenujabukabadow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1570/8580/files/86716410003.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0002/1667/files/tevarebu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8759/3632/files/how_to_delete_rows_in_google_sheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/bootstrap_autocomplete_dropdown.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4705/0661/files/biblia_de_estudio_palabra_clave_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2177/0656/files/aha_bls_test_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8863/4263/files/99196272988.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4686/9915/files/tozut.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007ceb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CEB 5664 bytes
SHA-256: 19bfdd68db40970fbaee627d7546cdbb798c5e5e360fddf6faa5b5bca87c6afa
font_01_sfnt_off0000901d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x901D 16644 bytes
SHA-256: b07148e6f0890e477b8fe235aad2784bdd57c017c314d47dd067b2033712de46