Malicious PDF — malware analysis report

Static analysis result for SHA-256 48d9fa46923d5703…

MALICIOUS

PDF

52.1 KB Created: 2020-08-07 01:56:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ad9471ac16f22ca209c9a73fd4d90568 SHA-1: fbc402401e9558ce53a2afc6986615050077462b SHA-256: 48d9fa46923d570349a1a6246f7072a193c0fa6155547680c8d9597052968c75
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=no%25C3%25A7%25C3%25B5es+de+administra%25C3%25A7%25C3%25A3o+geral+e+p%25C3%25BAblica+para+concursos+pdf'. This URL is likely used to redirect users to a malicious site. The document body, though heavily obfuscated, also contains this URL and other Shopify links, suggesting a link farm or SEO poisoning tactic to distribute the malicious PDF. The ML classifier also 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.ru/pify?keyword=no%25C3%25A7%25C3%25B5es+de+administra%25C3%25A7%25C3%25A3o+geral+e+p%25C3%25BAblica+para+concursos+pdf In PDF document text
    • http://files.isobelchurch.com/uploads/1/3/1/1/131163980/6767069.pdfIn PDF document text
    • http://powiga.cuttyantiques.com/uploads/1/3/1/3/131380005/rumazoratejerezek.pdfIn PDF document text
    • http://files.pomerenkedrivered.com/uploads/1/3/2/7/132740692/849738.pdfIn PDF document text
    • http://files.bluemountainseimei.com/uploads/1/3/0/8/130814666/pobesepi.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/1/0428/9835/8432/files/volobufepafolosovi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0083/9842/files/akuntansi_pemerintah_pusat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9888/9621/files/30645872116.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8135/1839/files/lixibumajiwupitobatigoboz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/76693260503.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/27621352833.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6758/8252/files/d_d_elder_evils.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6436/0100/files/92644070792.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9292/6873/files/mosusomufojibaxuzomom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1538/6789/files/bumekeribevubotoxapomego.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/4249/2836/files/lch_m_dng_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7349/4430/files/powerpoint_to.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_off00008100.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8100 6416 bytes
SHA-256: 4d44ee99aa97787bca964b1fc419182a5ec6aee6f8298c206ad13ea450082af2
font_01_sfnt_off00009535.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9535 14768 bytes
SHA-256: 8d4da77b979ea04c0b509b0942d41012c7609aae0b03438bbe71ed3f752883f9

Open this report in the interactive analyzer, or submit your own file for analysis.