Malicious PDF — malware analysis report

Static analysis result for SHA-256 511450271852ff7d…

MALICIOUS

PDF

40.6 KB Created: 2020-08-25 03:02:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d13fd226804e44e557de5043b645dd0b SHA-1: 432e80dd7632afcd779079d5fc9bce993246e6be SHA-256: 511450271852ff7ddbbfe31b18379911a568f60a1ac14cb6bfcf66b71ee28705
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains a large number of embedded links, many of which point to a redirector service (ttraff.com). The document body also contains a direct link to this same redirector, suggesting an attempt to lure users to a malicious site under the guise of providing information. The ML classifier strongly indicated maliciousness, and the presence of numerous SEO-linked PDFs further supports a malicious intent.

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=literary+journalism%252F+reportage+meaning In PDF document text
    • http://files.abstractmachina.com/uploads/1/3/1/3/131383342/vipulidix.pdfIn PDF document text
    • http://fukifopi.tatianasdelights.com/uploads/1/3/0/7/130776542/gixagamala_xozegej_bibawapu.pdfIn PDF document text
    • http://kenubiwil.xamanismo.info/uploads/1/3/1/4/131407226/abd7b8a37.pdfIn PDF document text
    • http://pivipejij.joeksmith.com/uploads/1/3/0/7/130775923/niribopa_bewaf_tezakiretun_basurezamunujup.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/1/0428/6559/0438/files/vevavune.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4986/0765/files/fobit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7004/5864/files/7167210053.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2823/1830/files/bodybuilding_step_by_step_workout_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3744/7576/files/user_story_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3329/7058/files/pedubojamo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0467/4727/files/tipos_de_absentismo_laboral.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3938/9856/files/faxepuwasugina.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4571/4077/files/aromaticity_nptel.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 2

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_off00006158.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6158 5296 bytes
SHA-256: 77de64612a84a9379837d4db82d97033fc7293dfaf62aa8b51937f601055f9a5
font_01_sfnt_off0000735c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x735C 10208 bytes
SHA-256: b08475cbb4c339d000202dbcc17923448ce7d02b83cdadd7ecafe76ba4ad5707

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