Malicious PDF — malware analysis report

Static analysis result for SHA-256 848e87616cd5488f…

MALICIOUS

PDF

43.8 KB Created: 2020-08-12 07:18:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: afcdfe3dfdb20952f366697a26d59904 SHA-1: eee71b5d3a03ce4b854a409ea7229a7e3251fda6 SHA-256: 848e87616cd5488fa02fdad2401861962ad9d951b605aa1097fd733ff7c60e8c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many of which point to a redirector service known to host malicious content. The document body, though heavily obfuscated, contains a URL that is also flagged as a malicious redirector. This suggests the document is designed to trick users into visiting malicious websites, likely for phishing or malware distribution.

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=ejemplos+de+acta+constitutiva+de+una+empresa+pdf In PDF document text
    • http://vutezeset.primrosehillevents.com/uploads/1/3/0/7/130775350/3515353.pdfIn PDF document text
    • http://files.100crystalametz.com/uploads/1/3/1/8/131860378/wijuxukagado.pdfIn PDF document text
    • http://files.lumibella.ca/uploads/1/3/0/7/130739916/e8e702e63a53930.pdfIn PDF document text
    • http://files.rebeccalangston-george.com/uploads/1/3/1/3/131382595/669a7f9a86bc.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/1/0434/2880/6807/files/biretuniv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7708/2019/files/43794473818.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2897/1674/files/37500736576.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/49221060197.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5795/5494/files/96993289248.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8305/4757/files/13100118738.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2100/7005/files/neopets_faerie_quests.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3173/2122/files/segulevida.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0346/1283/files/verawolif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9074/8316/files/antibioticos_betalactamicos_clasificacion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0591/0935/files/84427694855.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 3

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_off000067c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67C1 5392 bytes
SHA-256: ffaebe6a24a056f3bea1b13fb100eab80ecb9ed5014e0503357a037649f5760c
font_01_sfnt_off00007a0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A0E 11796 bytes
SHA-256: 9755f197e1a8315f39828515e4c6dee1e6ffdb930b4a8f6bc55215d847b8d8bd

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