Malicious PDF — malware analysis report

Static analysis result for SHA-256 77cde60898e3f014…

MALICIOUS

PDF

35.4 KB Created: 2020-08-11 20:46:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5aeedabedbe071cd9073b45e6ca77f77 SHA-1: 04b0127e3cd5de65cc1be93f1abb61c7d4f12f17 SHA-256: 77cde60898e3f0146480d925006d180dee74b8d0ae028d542065590ab315dbc7
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to a redirector URL, suggesting a link farm or phishing campaign. The ML classifier strongly indicated maliciousness. The document body, though heavily obfuscated, contains the redirector URL and references to other PDF files, reinforcing the link farm and potential phishing lure. No scripts were extracted, but the presence of embedded URLs and the link farm heuristic are strong indicators of malicious intent.

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=simple+gifts+piano+pdf In PDF document text
    • http://files.busterscinematicuniverse.com/uploads/1/3/0/8/130874474/3458996.pdfIn PDF document text
    • http://files.fionasremedialmassage.com/uploads/1/3/2/6/132695734/4212506.pdfIn PDF document text
    • http://xemikaz.streamatsspp.com/uploads/1/3/1/6/131606260/5526baebce94.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/1/0430/1760/1181/files/beatles_song_characters.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2137/7434/files/acta_constitutiva_de_una_sociedad_cooperativa_mexicana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5486/5320/files/patak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9652/9314/files/34761735406.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0846/5828/files/62136689930.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9085/3534/files/30338338933.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/6172/7647/files/gungeon_charm_horn.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0722/7550/files/irritrol_rd-_600_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0816/2974/files/xipibuvukut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8047/2984/files/la_caida_del_imperio_romano_heather.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3876/0342/files/dusapuxupozegipux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0455/7472/files/manual_hedge_trimmer.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 8

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_off00004dc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4DC2 5368 bytes
SHA-256: 0eb1fb13420f9133bd1b9900667c5e5f7cb08839028c01871379b75edefbfd0b
font_01_sfnt_off00005ff5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF5 9652 bytes
SHA-256: db056490201b4ecb0d8f0bffc37abd8d3463036ede2d8d2d2a765673e22b58aa

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