Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce27814dd19e4e38…

MALICIOUS

PDF

41.6 KB Created: 2020-07-10 13:13:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-07
MD5: 633cb595913ded7dd8cc9af118357032 SHA-1: c95997d3458d6009cbaf2f0afb9a7834a6b75b88 SHA-256: ce27814dd19e4e380b7ac9792f23a68743e90e107fe7b5561fdbf51a6130b2a7
184 Risk Score

Malware Insights

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

This PDF document employs a SEO link farm tactic, embedding numerous links that appear to be search results for "diferencia entre hortalizas y verduras pdf". One of the primary links directs to a known malicious redirector infrastructure at ttraff.com, which likely serves as a gateway to further malicious content. The document's structure and the presence of many external PDF links indicate a campaign to drive traffic to potentially harmful sites.

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/wb?keyword=diferencia%20entre%20hortalizas%20y%20verduras%20pdf In PDF document text
    • http://files.fhcamd.org/uploads/1/3/1/6/131637034/5932877.pdfIn PDF document text
    • http://files.wilcoprevention.org/uploads/1/3/1/4/131437740/29b296.pdfIn PDF document text
    • http://files.comforttrainer.net/uploads/1/3/2/6/132681002/4312007.pdfIn PDF document text
    • http://files.beatrice77livestocksales.com/uploads/1/3/1/4/131407035/sudapiwalera-papufuwika-timuzag-xuwujez.pdfIn PDF document text
    • http://files.stdaighs.com/uploads/1/3/0/8/130874458/nozinow.pdfIn PDF document text
    • http://files.domimpr.com/uploads/1/3/0/8/130814674/larad.pdfIn PDF document text
    • http://files.refinishing.org/uploads/1/3/2/6/132695516/0410a7.pdfIn PDF document text
    • http://files.risingravenband.com/uploads/1/3/1/3/131384018/buvab.pdfIn PDF document text
    • http://files.unitedwayofpc.org/uploads/1/3/2/6/132683289/gijigasufedezit.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://selijowo.files.wordpress.com/2020/06/ritajumabelono.pdfIn PDF document text
    • https://vipajesavit.files.wordpress.com/2020/06/10815485978.pdfIn PDF document text
    • https://zidimamokad339045790.files.wordpress.com/2020/07/jazijanuwuwimamusen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/visaboxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/buxidumex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gekisemegudifusoledo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dipipopiluniwewikojidil.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_off00006288.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6288 5336 bytes
SHA-256: dbf52251c07fddbd080fa830e4174f242a0ed01b1e2f9093cfd48c6ed758251b
font_01_sfnt_off000074b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74B8 10760 bytes
SHA-256: b2e0788040e1712a1865a1fa4efba11f0c28d2ce44df0a5b6a5ff57de459bdc4

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