Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fd6fb2b3523b810…

MALICIOUS

PDF

40.4 KB Created: 2020-08-17 16:45:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a26f6dc9a2c79038989734d574f830d2 SHA-1: 8bdfdc12cb7e0654d5acdb9b2982cf4b2bd49318 SHA-256: 5fd6fb2b3523b8107d6ab93cc4d039684c11f5170c175bc84c6a87d61b5171ad
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a mass of external links, masquerading as a definition of contemporary art, to a redirector service. The primary malicious URL identified is https://ttraff.cc/pify?keyword=arte+contemporaneo+definicion+pdf, which is likely used to funnel victims to further malicious content or phishing pages. The ML classifier strongly indicated maliciousness, and the presence of numerous SEO-optimized PDF links suggests a link farm or spam campaign.

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=arte+contemporaneo+definicion+pdf In PDF document text
    • http://files.lifespirepa.com/uploads/1/3/1/3/131397955/4127110.pdfIn PDF document text
    • http://files.jashancatering.com/uploads/1/3/2/6/132695862/lowulisa_liwuwumadoz.pdfIn PDF document text
    • http://xuxejom.livingfaithcommunities.com/uploads/1/3/2/8/132814930/gojaleji-xelimasuxi.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/1/0428/6332/9446/files/dixieland_jazz_trumpet_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5650/4744/files/64090605543.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6445/8405/files/rainmeter_taskbar_replacement.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2925/8649/files/advantages_and_disadvantages_of_internet_communication.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8671/5805/files/valevejupitilotawatil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8004/6997/files/xuvuwununixerapidonedap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5516/7126/files/silimuzimiroxolu.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_off00005e16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E16 5080 bytes
SHA-256: 0a13aa937eed4aaf19f14183b7c0f093147de32464b7ead045a785171b688606
font_01_sfnt_off00006f3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F3D 11160 bytes
SHA-256: b1688e001996ef54b46316567638195cbbfcd4041078ddef44d264d9cfbbe2f5

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