Malicious PDF — malware analysis report

Static analysis result for SHA-256 c48efc6a0b76e5ca…

MALICIOUS

PDF

48.7 KB Created: 2020-08-14 07:02:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 16df121f0f0164598602845b05e57562 SHA-1: 30ba67813fa3fdbf3dfaedec65a4104cc8ea98d6 SHA-256: c48efc6a0b76e5caff50af72bcc1945b71bd38d2ede57a21889d6996aa6e4a4f
194 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to a redirector service (ttraff.ru). The ML classifier strongly indicates maliciousness. The document body, though heavily obfuscated, contains the URL that is also present in the heuristics, suggesting a lure to click on the link for 'bartender uniform shirts'. The primary attack pattern involves redirecting the user to malicious infrastructure.

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=bartender+uniform+shirts In PDF document text
    • http://files.golffordreams.com/uploads/1/3/0/7/130775528/zixujedimosov-zifiruzo.pdfIn PDF document text
    • http://files.dixonrams.com/uploads/1/3/1/3/131379594/lufujikarad_toxavuwumeb_fitezusila_sivitiwe.pdfIn PDF document text
    • http://files.marinavillagealameda.com/uploads/1/3/1/0/131070792/besegivotat.pdfIn PDF document text
    • http://files.bythebible.org/uploads/1/3/0/8/130873781/fozimibigenu.pdfIn PDF document text
    • http://xipuse.phyto5.com.au/uploads/1/3/2/7/132710575/fuwutuwobezedu.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/1/0430/5698/8311/files/dijopupadani.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1733/1100/files/d_d_3._5_unearthed_arcana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8875/6374/files/thematic_data_analysis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3951/1960/files/modekevu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4406/0839/files/wevimaforaxozaxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8911/6836/files/abecedario_en_ingles_pronunciacion_para_imprimir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2764/5084/files/auggie_and_me_pluto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6870/3398/files/a_level_biology_past_papers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xekugoxozeritazol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0090/5373/files/a_startup_enxuta_livro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2681/5903/files/83621807887.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_off000080c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80C2 5164 bytes
SHA-256: 7944b93b34f84361d5c90699cc3ed1039fe68f8828b249e0e10c5462387f5324
font_01_sfnt_off00009221.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9221 10392 bytes
SHA-256: eeb5c98b26c3faa3f25cc3369b340368723f062a3f5ecd4edc3eec8cb3a2e3d4

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