Malicious PDF — malware analysis report

Static analysis result for SHA-256 27cf04b504bc50b1…

MALICIOUS

PDF

38.9 KB Created: 2020-08-06 13:14:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 476eebcfbd6abf021d12790c6ba3f589 SHA-1: 32f11acc3a8134a43f724cecf76ba5f6a7489c16 SHA-256: 27cf04b504bc50b1e13eeaed46d7fe3c7cf17785fee903536cbc34c0bc1e0866
194 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as educational material, but the primary link redirects to malicious infrastructure. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms this redirection. The document body contains obfuscated text and URLs, suggesting an attempt to disguise the malicious intent. The presence of numerous Shopify links indicates a link farm strategy to obscure the final malicious destination.

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=area+of+triangles+and+parallelograms+worksheet+pdf In PDF document text
    • http://files.otellis-restaurant.com/uploads/1/3/1/8/131857626/luxidowinixit.pdfIn PDF document text
    • http://files.missliane.com/uploads/1/3/1/0/131070591/nikoxazenijebip.pdfIn PDF document text
    • http://sawupime.darkstarent.com/uploads/1/3/1/4/131482995/zuvawiwefogekiraxafa.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/1/0431/4886/9786/files/41708998752.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/giratajolexodomofavewolov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3540/1112/files/wazoler.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6360/6429/files/5_pointed_star.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7188/8803/files/todadepo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8032/7076/files/rirutexuwigagefegogokiba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8292/2646/files/it_ebooks_info.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/7389/2515/files/al_bayan_vol_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3708/2271/files/nakujeburez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7244/4823/files/21488152325.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9301/5190/files/vijimixulunowixovame.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1705/2066/files/sigonom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8085/2383/files/43885608391.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_off00005924.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5924 5600 bytes
SHA-256: 7154b7268fb9ea6c0407a333d5e92c46b2b04a3f58a95eaa0a5f45b98df54d49
font_01_sfnt_off00006c25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C25 10076 bytes
SHA-256: 3dd72337b82d565559bcc03a06c0dacda2da3718dc9847967c1f7d56ec9fcaa0

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