Malicious PDF — malware analysis report

Static analysis result for SHA-256 5eababe0640c566c…

MALICIOUS

PDF

63.4 KB Created: 2020-08-09 06:29:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c2f4670f1812ae1b457fde5ab2afe70b SHA-1: d42dad327c24ad64fee1a7c7ffd0ff9bf3aeff70 SHA-256: 5eababe0640c566cc546742bea15e9e3686aa89efdab3a127521339820079670
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to an SEO redirector, specifically 'https://ttraff.cc/pify?keyword=aircraft+structure+2+pdf', which is flagged as malicious. This indicates a phishing or scam attempt, likely using a lure related to 'aircraft structure 2 pdf'. The presence of a large number of external PDF links suggests an attempt to manipulate search engine results or distribute malicious content broadly.

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.cc/pify?keyword=aircraft+structure+2+pdf In PDF document text
    • http://files.apaperlife.ca/uploads/1/3/1/3/131381518/64d0e3f675ba10a.pdfIn PDF document text
    • http://files.braunsinc.com/uploads/1/3/2/6/132696483/f514c07.pdfIn PDF document text
    • http://files.designsbygiacomo.com/uploads/1/3/1/8/131871745/nijokupe-tovozurubo.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/1/0432/9242/6405/files/duzatesufanetixubef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1573/2376/files/89122096272.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7727/1706/files/mokurov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0964/5478/files/27930327609.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0833/3736/files/32643878562.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3705/6411/files/calcular_porcentaje_de_grasa_corporal_por_pliegues.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2629/0587/files/18179963868.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8339/9321/files/60874499706.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8941/2764/files/85195287918.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9503/8888/files/descriptive_writing_for_grade_5.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2650/5118/files/saxuzo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0333/0208/files/88843786483.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 5

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_off0000b344.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB344 5240 bytes
SHA-256: 814156ac385c5bf978be23da1011dcffb8cffe50365bdb8905ea9b2b1bda851f
font_01_sfnt_off0000c52a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC52A 14060 bytes
SHA-256: 63b620d7293af65700ef3d0729a6022e57fe6f454781c3565372e41d49fe3eba

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