Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f27c949d52ee961…

MALICIOUS

PDF

32.8 KB Created: 2020-03-30 04:37:54 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: bdc5b5be74b9dc6cd19654315b86fd63 SHA-1: 931ed4fc8f0ce23a99935ad75c76016355ce0848 SHA-256: 9f27c949d52ee96196fcd38413b76585fd2070f5aa652289da8fc3216090b88c
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The ML classifier strongly indicated maliciousness. The document body contains garbled text but includes a URL that appears to be part of the link farm. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://ddct-24-4-crs-4g-100m.pleasingfood.com/uploads/1/3/1/4/131438162/131438162.html#loreal+hair+color+walmart PDF link annotation
    • http://musaadahcharity.com/uploads/1/3/0/6/130620662/1c25c16b1e.pdfIn PDF document text
    • http://bairddesign.com/uploads/1/3/0/7/130739478/207b1.pdfIn PDF document text
    • http://centralchurchofthenazarene.com/uploads/1/3/1/3/131380031/04bd97ed98.pdfIn PDF document text
    • http://btconstruction.info/uploads/1/3/0/2/130289731/mezisisuwunalo.pdfIn PDF document text
    • http://shannonlegrand.com/uploads/1/3/0/4/130483848/gubasiruwibujukaga.pdfIn PDF document text
    • http://fgfitnessgear.com/uploads/1/3/0/5/130542985/zutopawatufewaw.pdfIn PDF document text
    • http://postmaster.lighthouse-iki.jp/uploads/1/3/0/9/130969953/lumuzivafekisibu.pdfIn PDF document text
    • http://cherryhilllawncare.com/uploads/1/3/0/7/130775506/lulifediwebisu_kopusix_vabefesowil.pdfIn PDF document text
    • http://financementgeneral.com/uploads/1/3/0/5/130588639/dfe58924e9e768c.pdfIn PDF document text
    • http://myurlonline.com/uploads/1/3/0/7/130776113/21ef446f9c.pdfIn PDF document text
    • http://caverflo.com/uploads/1/3/0/5/130541656/5441501.pdfIn PDF document text
    • http://wearepets.nl/uploads/1/3/0/9/130970012/7488272.pdfIn PDF document text
    • http://redteam3.net/uploads/1/3/0/2/130272484/bimalemadek_mitexux.pdfIn PDF document text
    • http://leisurecarrental.shop/uploads/1/3/1/0/131070712/nixasele.pdfIn PDF document text
    • http://cbdsnacks.me/uploads/1/3/0/4/130436441/nunifes_modeluj_rabiburo.pdfIn PDF document text
    • http://textilespreserved.com/uploads/1/3/1/4/131453268/jedizuwe_kiwofe.pdfIn PDF document text
    • http://thehairyteddy.com/uploads/1/3/0/7/130739214/6461188.pdfIn PDF document text
    • http://hounds-and-hooves.com/uploads/1/3/0/5/130589308/a3cc6b5b05a1ed.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

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005a48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A48 7032 bytes
SHA-256: f79e6a034c6c323b3593ee5b5d376689ef49054aca76395b24ab9d696dd80670

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