Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e897382bdb3e200…

MALICIOUS

PDF

44.7 KB Created: 2020-08-01 19:56:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 66acd19c889f7f9386304ee42938168b SHA-1: 06719ed3f5fa6ed755d00a54d1eab9a89f4aef24 SHA-256: 4e897382bdb3e200494647df5112ce0b534a7069635991d145eaebb6f807785f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a lure related to 'Campbell biology 6th edition pdf' and embeds numerous links. One of these links, https://ttraff.ru/pify?keyword=campbell+biology+6th+edition+pdf, is identified as a malicious redirector. The document's structure and content align with an advance-fee scam, aiming to trick users into clicking malicious links under the guise of providing a valuable resource. No scripts were extracted from this sample.

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.ru/pify?keyword=campbell+biology+6th+edition+pdf In PDF document text
    • http://files.suffolksingers.co.uk/uploads/1/3/1/6/131606984/212881d88fbe6.pdfIn PDF document text
    • http://files.olsenmediaentertainment.com/uploads/1/3/0/8/130813054/7465642.pdfIn PDF document text
    • http://files.thepetshelter.org/uploads/1/3/2/8/132815220/3406445.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/1/0427/9212/4572/files/momepavebuvomif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0431/1190/files/77469251919.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6749/7884/files/xafalejonudipajadusos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vabagibad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89462818099.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4845/9673/files/dikomolakogunaresopofutu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4285/6344/files/popakexatoloxexivab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2762/0249/files/28220501154.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1423/2996/files/goduwatusewaju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0550/1852/files/34517038142.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_off0000714f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x714F 5484 bytes
SHA-256: e11f9c93d33647a59707d8a9f1cd3ccee80421c9e8f3cf3e959de57efcf0cb92
font_01_sfnt_off000083d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83D3 10112 bytes
SHA-256: 810619747a508f1c753ef7b6f1547790af557eae7468cefeafe8f02ce3232ae9

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