Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d861a50469ee19f…

MALICIOUS

PDF

50.4 KB Created: 2020-08-18 22:05:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 64975535a8f34bc5b74e69d10cf99331 SHA-1: f455daa6282ed94a5f0b82945d86df2cf5b5c9e1 SHA-256: 5d861a50469ee19f6e02f3e427480e2081445b016d34fd5eb31879a6fb1a4faf
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm and a malicious redirector URL, indicating an attempt to lead users to potentially harmful content. The ML classifier also strongly flagged this PDF as malicious. The embedded URLs suggest a phishing or scam attempt, likely disguised as a helpful guide to entice clicks.

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=archeage+unchained+guide+for+beginners In PDF document text
    • http://jodezaxo.eleanor-e-books.net/uploads/1/3/1/4/131452976/tawugu_lefiz_pobivotapimezos.pdfIn PDF document text
    • http://files.themudlakeproject.ca/uploads/1/3/1/4/131407665/2735271.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/1/0433/9305/6933/files/80668574059.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3603/3695/files/estado_definicion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0925/1240/files/business_risk_management_plan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0215/7466/files/power_amp_repair_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5847/1846/files/daxatufig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7577/1304/files/49342622864.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3645/8654/files/kowurutevifumakepupenatal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5306/2043/files/73171228357.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4503/4911/files/marrakech_medina_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1705/2066/files/agustin_de_iturbide_biografia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0671/2219/files/85479092913.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0441/9478/files/mount_and_blade_bannerlord_demo_free.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 6

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_off00008764.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8764 5380 bytes
SHA-256: b4b481062f4260adcc6dd305c3f4664b2f245aa0f94cf0fb4b91088714a38f6d
font_01_sfnt_off0000999f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x999F 10360 bytes
SHA-256: 37fae2ac7e38a9c3ba97dab1729d37bdf89861c6ef0567047518080c4522e111

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