Malicious PDF — malware analysis report

Static analysis result for SHA-256 8edb477d7170e459…

MALICIOUS

PDF

42.8 KB Created: 2020-08-07 05:13:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3ba35077677c9c7d536e842afd0777b9 SHA-1: 760213948ce7be1c76df2c3281ee1688a9ecfbd1 SHA-256: 8edb477d7170e459384759f1355d077754c65f8237d7ebf4934956b2f5622a9b
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 legitimate academic resources, but the primary link redirects to a known malicious infrastructure. This suggests a social engineering lure to drive traffic to a malicious site. The PDF structure and embedded links indicate a phishing or redirection attack.

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.com/pify?keyword=introduction+to+academic+writing+pdf+vk In PDF document text
    • http://files.blankpagesworkshops.com/uploads/1/3/2/8/132814097/1f2b413b01e.pdfIn PDF document text
    • http://files.sasmitaworld.org/uploads/1/3/1/4/131452846/jurumuvodug.pdfIn PDF document text
    • http://files.pottershouseoceanside.com/uploads/1/3/1/1/131163635/6ef5596eabb3.pdfIn PDF document text
    • http://files.44club.co.uk/uploads/1/3/1/4/131406274/a5d90.pdfIn PDF document text
    • http://palotolo.wintersetumc.org/uploads/1/3/0/7/130775169/7a94ef1e3e4.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/1/0433/6189/4565/files/85191398617.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6738/3713/files/fool_me_once_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1381/5966/files/4453775637.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0658/3203/files/biwisojakudukezawas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3651/5221/files/60307385869.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9085/3541/files/19858610800.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3027/3435/files/reledisavugufikotitaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3966/1981/files/azazel_isaac_asimov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2135/3635/files/andorra_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/7784/8488/files/bank_accounting_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6997/2384/files/allantoin_in_cosmetics.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_off00006628.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6628 5416 bytes
SHA-256: 3288f1632bddc94e32e1ac0d91b79637a810a8498841e321b1723637e3d2af94
font_01_sfnt_off000078a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78A1 11276 bytes
SHA-256: 576d0351afad34df2495ff80c7d9dd8a2dcb64edd4ddaaf4988545dcc4151a06

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