Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf09a36fda6bd462…

MALICIOUS

PDF

42.7 KB Created: 2020-08-08 18:13:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6fee3eb266a0a33b9b640e993e93edb0 SHA-1: dfa8cc9e969a834ee436cd0bb815ab99ddc06351 SHA-256: bf09a36fda6bd462f951b7524d1b5e2f2441bb34a1bf581be4ddce2daf9392bc
194 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to external resources, a technique often used for SEO poisoning or to redirect users to malicious sites. The primary link, 'https://ttraff.com/pify?keyword=mediatriz+bisectriz+mediana+y+altura+pdf', is flagged as a malicious redirector. This suggests the document's purpose is to lure the user into clicking the link, leading them to a compromised or malicious website.

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=mediatriz+bisectriz+mediana+y+altura+pdf In PDF document text
    • http://files.femaleilluminati.com/uploads/1/3/0/7/130775484/vilididado-wixir-mapedeza.pdfIn PDF document text
    • http://files.revivetheroxy.org/uploads/1/3/1/8/131871984/lugogipudufat.pdfIn PDF document text
    • http://bobuvevo.thelookingglassesthetic.com/uploads/1/3/0/8/130874474/wejenixujili.pdfIn PDF document text
    • http://files.greenbrierhistorical.org/uploads/1/3/2/8/132815220/jagovirimeko.pdfIn PDF document text
    • http://files.slytactraining.com/uploads/1/3/2/7/132712332/49eb7d0aaa4f.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/1/0429/2041/1289/files/80224177683.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3603/3695/files/free_acoustic_guitar_magazine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/puxoved.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1712/6567/files/97717100655.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1519/8104/files/maths_problem_solving_activities.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0372/9304/files/lusuta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8298/1278/files/worship_songs_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/50971407729.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5271/9515/files/xekaliramobe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7102/0964/files/empire_earth_2_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6183/0037/files/calculus_textbook_10e.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8947/5237/files/maveferavu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8197/4435/files/30972154749.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0459/1271/files/wawumevemafudubox.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_off000064b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64B2 5600 bytes
SHA-256: aca2f15e369df3d729c01339d66f976b615d719c8b374a246e737a5759988c49
font_01_sfnt_off000077bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77BC 11160 bytes
SHA-256: 34843fcdbdbde3deda07d8330125e41ff068c4ce49c2852732485ec71d4eccdc