Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cf7e23012db1968…

MALICIOUS

PDF

61.0 KB Created: 2020-08-14 01:25:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1bd434ce74c6baed66da64a174e69552 SHA-1: 23f7037ff235ddea232f1f1c6d91b333f279dd6f SHA-256: 7cf7e23012db19689df05a7e4356e23ebd12a60af9129edc164272ed7405753d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to redirectors and SEO farms, designed to trick users into downloading content. One critical heuristic indicates a direct link to known malicious redirector infrastructure, specifically `https://ttraff.cc/wb?keyword=marcus%20aurelius%20meditations%20greek%20pdf`. This suggests a phishing or scam attempt disguised as a free resource.

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/wb?keyword=marcus%20aurelius%20meditations%20greek%20pdf In PDF document text
    • http://files.gimliwaterfrontcentre.com/uploads/1/3/1/4/131454238/rexij.pdfIn PDF document text
    • http://files.cruzphotography.co/uploads/1/3/0/8/130815137/dorevirovumimo.pdfIn PDF document text
    • http://dujusogu.ignitetheapple.com/uploads/1/3/0/8/130874001/wunevekogolovixujoz.pdfIn PDF document text
    • http://kakig.youthrisetogether.com/uploads/1/3/1/4/131453133/f7597.pdfIn PDF document text
    • http://files.northamptonnyhistory.com/uploads/1/3/1/3/131380456/4051408.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/1/0432/6418/0390/files/icse_class_11_biology_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4481/2438/files/22520675619.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7987/6252/files/ergonomie_de_travail.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8058/1274/files/35492942828.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0337/8839/files/rejoxituxikogezulebavewiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3977/6159/files/barcelona_metro_map_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2969/0525/files/apsu_time_table_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1111/3123/files/76083369452.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3393/5519/files/ceh_certified_ethical_hacker_all_in_one_exam_guide_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3907/2161/files/surapatok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7812/3680/files/3785623823.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 4

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_off0000a860.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA860 5544 bytes
SHA-256: c50d2c2012f79c4a920237fd07f82fbaedf32b388280a1cd3ac39e18957d7a98
font_01_sfnt_off0000bb2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB2E 14116 bytes
SHA-256: c2c9d00bf70aa0a142738a3c1db1627a1bf8dad16e115e99668bad1e2a45015a

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